Three sisters reunite after the death of their beloved grandmother, and learn they have inherited much more than the family manor.

Mourning the death of Prue, Piper and Phoebe must now come to grips with the loss of their oldest sister, and the loss of the Power of Three. However, The Source discovers an unknown sister - the daughter of Patty and her whitelighter Sam, who had been kept hidden, Paige, the now-youngest Halliwell can restore the Power of Three and reunite the sisters' strength as witches.

Paige takes the Book of Shadows into her work to cast spells which help her co-workers. Meanwhile, Piper, who is filled with anger over the death of Prue and the recent actions of Paige, is possessed by a member of a supernatural band of vigilantes known as the Furies.

While making a potion, Paige accidentally switches bodies with Phoebe. Meanwhile, when an apprentice ninja kills his master, the sisters must find a way to vanquish him, while learning to control their switched powers.

Paige accidentally summons a medieval knight, who believes Paige is the love of his life. However, the knight is under the influence of an evil sorceress.

The Source sends Piper into a deep coma, where she perceives an alternate reality. Phoebe and Paige must find a way to return her to reality and save her from giving up her powers while she is delusional.

Cole must face his true demonic nature when he is faced with another demon who is mistaken as the murderer of local witches who belong to the same coven. Meanwhile, Cole proposes to Phoebe, and Piper and Leo consider their future involving children.

Wanting to protect a ten-year-old orphaned boy who is a firestarter, Piper and Leo try to hunt down the demon before he can deliver the kid to The Source. Meanwhile, Phoebe is given Gram's wedding ring by Cole, but to their surprise the ring has been cursed to transform the wearer into a traditional 1950's suburban housewife.

The Source breaks an age-old agreement between good and evil by stealing The Hollow, an ancient vapor which he uses to absorb Piper & Paige's powers. Meanwhile, Phoebe must allow Cole to help them, despite her having a premonition involving Cole sacrifici

As Phoebe prepares for her wedding day, she is completely unaware that the Source has taken over Cole's body, a plot that will likely ruin the big event. Meanwhile, when the Seer tells the Source that if he can marry Phoebe in the ""dark way"", it will insure that their future son will be the most powerful, evil being ever.

When two ghosts from Leo's past return to seek revenge, Leo faces his demons by submitting, causing Piper's life to be threatened,leaving Paige to deal with the situation. Meanwhile, Cole tries to convince Phoebe they need a home of their own.

A vampire queen tries to dethrone Cole as ruler of the Underworld and attempts to turn Paige against her sisters. Meanwhile, Phoebe begins to feel under the weather.

Phoebe tells Piper and Paige that she is pregnant, and that Cole is the father. Meanwhile, Piper and Paige team up with a wizard to stop the coronation of the new Source, unaware that it is Cole and Phoebe is soon to be his Queen of the Underworld.

Phoebe accepts her new role in Cole's life, but she still sets out to save an innocent after she has a premonition and even seeks her sisters' help in protecting the man. Meanwhile, Piper's heart doesn't seem to be in it as she prepares to defend her family against any new threats from the underworld.

The Seer plans to steal Phoebe's unborn baby so she can raise the child to become the next Source and prevent the throne from passing on to another demon. Meanwhile, the baby begins to take over control of Phoebe's body, which proves dangerous to Paige.

When the Angel of Destiny offers the sisters a chance to relinquish their powers and lead normal lives as a reward for vanquishing the Source of All Evil, their decision is put on the back burner, while they try and avoid an FBI agent who has them under surveillance and deal with Cole's calls for help, who is trapped in another realm, holding onto his love for Phoebe.

An evil witch traps the Halliwell sisters in distorted versions of classic fairy tales, where Phoebe attends a ball as Cinderella and meets Prince Charming, Paige has a taste of Snow White's poisoned apple, and Piper encounters a big, bad wolf, as Little Red Riding Hood.

Cole and Phoebe both fall under the spell of the Siren, who lures husbands to her and entrances their wives to follow with the intent to kill, leaving Piper and Paige to figure out how to save Phoebe. Piper, upset with Leo because he does not understand the challenges of being pregnant, and Leo, frustrated that Piper does not realize the demands of being a Whitelighter, have their personas switched magically by their unborn child.

When a demon coerces a boy into turning him into an evil comic book villain so he can steal an Elder's powers, the boy transforms The Charmed Ones into comic book heroes with superhuman strengths to prevent this from happening.

While seeking the advice of a fortune teller regarding her missing power of premonition, Phoebe discovers that there is a demon who has been stealing the eyes of Gypsies. Meanwhile, Piper wants to see a doctor about her baby, but Leo is concerned about the threat of exposure.

Barbas, the Demon of Fear, returns and tricks Paige into giving him Cole's powers, and plots revenge on the Halliwell sisters by playing them against their darkest fears.

When Phoebe must constantly save the life of her new boyfriend, a warlock shows up from the future, claiming that future Cole sent him in order to kill the boyfriend before Phoebe's dies instead. However, present Cole cannot allow this and tries to help the sisters protect Miles, but when the warlock decides to work on his own agenda, by stealing the Book of Shadows, it results in the death of two of the Halliwell sisters. The survivor must decide whether going back to change the past is the right thing to do.

In his twisted attempt to win Phoebe's heart back, Cole casts a spell that alters reality, that eliminates Paige as a Halliwell and destroys the Power of Three. Meanwhile, Paige suddenly finds that her sisters have no knowledge of her existence and that past villians have come back to haunt them.

Glen returns to Paige's life with a big surprise - he is about to get married to a girl called Jessica. Meanwhile, the sisters summon a Witch Doctor whom they want to dispatch all the evil remnants that surround the Manor.

A demon attacks The Charmed Ones with dream dust, causing their nightmares to come to life. Paige is harassed by an evil clown at a baby shower, Piper has an affair and Phoebe is chased by a maniac with a chainsaw. The sisters must use magic to put themselves to sleep to re-enter their nightmares and unmask the symbolic meaning of their dreams.

Phoebe and Paige go to a summit meeting with the leaders of evil and discover that all magic - both good and bad - has disappeared enabling the leaders to steal Piper's about-to-be-born baby and welcome the twice-blessed child into the kingdom of evil.

The Charmed Ones must protect Piper's son from two demons, but the baby has a few surprises of his own. Meanwhile, Paige goes undercover as a bounty hunter and Phoebe's future with the newspaper is threatened by the new owner.

When a demon attacks and kills one of the three nympths that protect a lake, the Charmed ones try to help. However, once the demon is destroyed, the nypmphs decide Paige should replace the fallen nymph, and they won't take no for an answer.

In order to get close to baby Wyatt, the Crone steals one of the senses from each of The Charmed Ones, in an attempt to fool the child.

When the mythic Gods, the Titans, are released and kill all the elders, Leo is forced to take over. Meanwhile, a mysterious Whitelighter from the future guides the Charmed Ones when Leo gives the girls the ultimate power to vanquish the Titans, recreating them as Greek Goddesses, despite the risk that they will be seduced by their vast new powers.

The Cleaners kidnap Wyatt and erase his existence, after the child accidentally brings a dragon to life. When Piper, Phoebe and Paige regain their memories they relive the day Wyatt was kidnapped. Meanwhile, Paige is caught in the middle of sexual harassment troubles, Phoebe continues to cope with her newfound power of empathy, and Leo gives Chris a new assignment.

While working for Grandma Callaway, Paige becomes the witness to a dangerous magical family feud going back for generations. The Halliwell sisters try to help Richard Montana end the feud before it escalates any further.

Paige is forced to make a deal with a demon, in order to recover her boss's soul. Meanwhile, Piper learns that Wyatt has been sabotaging her dates, Phoebe gets a new writing partner, and Chris and Leo accidentally travel back in time.

Bianca, a woman from the future, arrives to take Chris's powers, and Leo learns that she is actually part of an assassin family of witches. Meanwhile, Paige decides to move in with Richard, while Phoebe ponders joining Jason in Hong Kong.

Paige finds herself transported back in time to an era of free love and free magic, where she discovers Grams, a peace-loving hippie, who is on a crusade to rid the world of evil through the magical power of love.

After Piper vanquishes a demon from Wyatt's room, she has an epiphany about the rest of her life concerning Wyatt. Unable to handle's Piper's revelation, Paige and Phoebe decide to remind Piper of the importance of love by conjuring up a ""Mr. Right"" as Piper's birthday present. Meanwhile, Chris convinces the sisters to bind Wyatt's powers, then demonic cult members kidnap the baby.

The Charmed Ones help out Leo's mentor, Gideon, when he wants to find out who cast the spell of darkness over a magic school and conjured the headless horseman who has been beheading the teachers. Meanwhile, Phoebe goes on a vision quest.

When Phoebe frees a genie from a bottle, she soons finds that she must take the genie's place. Meanwhile, anxious to put Leo and Piper back together, Chris uses Phoebe to make his wish come true, but she takes his instructions too literally.

Gideon makes a deal with the Darklighters to get rid of Leo, but they accidentally send Leo and Piper to the Ghostly plane, leaving Phoebe and Paige to believe that they are both dead. Meanwhile, Chris begins to disappear and reveals that he must be conceived before the night is over or he will vanish forever.

Phoebe accidentally casts a spell on herself that allows her wild teenage personality to take over, and teen Phoebe is eager to use her magic to her advantage. Meanwhile, Piper asks her father to find out why Chris is avoiding her.

When Piper is kidnapped and cocooned by the Spider Demon, and becomes Chris infected with the Demon's venom, causing him to mutate into a spider, Paige, Phoebe and Leo try to rescue them. Meanwhile, Leo finally learns why Chris resents him.

A grief-stricken Piper and Leo attend a Hindu wedding, where they inadvertently receive the powers of Hindu gods, and it's up to Phoebe and Paige to keep them from consummating their love in order to save the universe.

The Charmed Ones have their hands full, when thanks to a bored Magic School student, they must keep Lord Dyson from killing the infamous Lady Godiva before she can travel back in time and complete her famous ride. Meanwhile, Phoebe has reservations about Les being able to properly write an advice column for women.

Agent Brody and Paige investigate when they discover that the demon Sarpedon is capturing innocents' guardian angels and using them to protect himself from the new power. Meanwhile, Piper and Phoebe encourage Leo to go on a vision quest to face his demons.

Paige and Agent Brody, are drawn into an unfinished novel that takes place in the 1930s, and they must elude the gangsters in pursuit of the famed Burmese falcon. Meanwhile, Phoebe, Piper and Leo work to re-write the novel to help get Paige and Brody out of it, before they're killed.

Piper learns Leo is an Avatar, when he confesses to her, despite the objections of the other Avatars, who believe Piper should find out on her own. Meanwhile, Phoebe and Paige ask Kyle for help, but his reaction proves disastrous.

When Piper switches powers with Phoebe, to allow her to see the vision of the utopian world, Zankou interferes, and causes their powers to be transferred to innocent bystanders, who run amok. Meanwhile, Brody's murderious desires prompt Paige to take him on a journey back to his childhood to learn the truth about his parents' death.

Piper is attacked by demons and winds up in a coma, and as she hovers between life and death, her spirit meets a familiar face who wants to help restore Phoebe's faith in love. Phoebe, Drake & Paige rush to save Piper by attempting to locate Leo, who's memory has been wiped clean by the Elders in attempt to allow him to choose his own destiny: be an Elder forever or choose Piper, and become mortal.

In an attempt to lure the sisters out of the manor, Zankou sends his underlings to attack Leo, in order for him to search the house for the Nexus and release the Shadow, the ultimate power. Meanwhile, in order to protect his parents Wyatt magically shrinks them and traps them inside a dollhouse, and Phoebe is left in charge of the newspaper.

The sisters scramble to recover Pandora's Box when it falls into the hands of a shapeshifting demon who intends to open it and fill the world with all of its sorrows. Meanwhile, Paige's Whitelighter side rises to the surface, when she begins hearing calls from the Elders, and Leo and Piper clash over parenting issues - namely raising magical children.

A powerful sorceress switches bodies with Phoebe, who ends up trapped in the Underworld. Meanwhile, Paige faces a big problem when her new charge refuses her help.

Unbeknownst to the sisters, baby Wyatt's new ""imaginary"" friend is actually a demon named Vicus who is trying to win Wyatt's trust to turn him evil. Meanwhile, Piper casts a spell to be able to understand baby Wyatt, but inadvertently brings 25-year-old Wyatt back from the future.

When a person who was killed right in front of Phoebe comes back from the dead to blame her, she becomes guilt-ridden and vulnerable, creating an opportunity for Zankou to steal the Book of Shadows. Meanwhile, Paige has a new charge who knows nothing about magic, and Piper and Leo attempt to plan Chris's first birthday party.

After being presumed dead, the Halliwell sisters begin their demon-free existence with new identities: Phoebe is overwhelmed with visions of her future husband; Paige begins hearing her whitelighter call, which draws her to a mysterious young witch; Piper attempts to deal with her financial situation, the club and her children. Meanwhile, a brash young demon decides that he wants the Halliwell manor as a trophy and plots to kill Victor to get to it.

While attempting to take over the Underworld, a young demon plots to lure the Charmed Ones out of hiding, but when Billie stumbles onto his plot ,she becomes one of his victims instead.

Billie must deal with her painful childhood memories of her sister's kidnapping, before she can vanquish her latest demon target, The Dogan. Meanwhile, the press are bombarding the sisters, since the announcement of their teaming with Homeland Security, so Paige goes to the Elders for help.

When a demon escapes from custody, Agent Murphy enlists the Charmed Ones to help, where they learn a government created virus is spreading amongst magical beings, that causes them to "hulk out". Meanwhile, Billie becomes infected with the virus and it's up to the sisters to find an antidote.

The Angel of Death returns to visit the Charmed Ones but they're shocked to learn that he's there for Leo. To try to stop him from taking Leo, Piper casts a spell that backfires, making every man a Leo lookalike, forcing Piper to take drastic measures and ask the Elders and the Avatars for help. Meanwhile, Billie continues her search for the truth behind her sister's disappearance.

Paige learns the difficulties of dating a mortal when Henry becomes too involved in the magical world and is torn when another suitor arrives hoping to convince her to marry him so they can become the ultimate magical couple. Meanwhile, Billie finally finds her missing sister, Christy; Piper faces a romantic decision when she runs into an old flame and begins to wonder if she should move on with her life.