Mike figures out the hard way what it means to be a Samurai Ranger after a Nighlok attacks him and his friends.

The Rangers step in when a devious Nighlok tricks a young boy into giving up on his baseball dreams.

Struggling to master a secret power disc, Jayden foregoes a trip with the others to an amusement park where the rest of the team encounters the evil Nighlok Dreadhead.

When a Nighlok who uses insults as a physical weapon attacks the Rangers, only Emily is unaffected. To help her teammates, she explains how difficult events in life become an opportunity to grow stronger.

Kevin is assigned the crucial task of catching the elusive SwordfishZord in order to save the other Rangers who have been incapacitated by the stench of the Nighlok Yamiror's breath.

Dayu crosses into the mortal world to cause misery by kidnapping brides on their wedding day.

A Nighlok uses mind control powers to force Kevin to fight against his fellow Rangers.

After Mike goes rogue in battle, Mentor takes Mike's Samuraizer away until he learns a deeper lesson about the nature of the Green Ranger's Symbol Power.

A Nighlok is sent to stop the Red Ranger from using his special power to seal Master Xandred in the Netherworld forever, but their duel is interrupted by the mysterious Deker.

Jayden leaves the Shiba house hoping to keep the other Rangers out of harm's way, but when a powerful Nighlok attacks, Jayden finally accepts the fact that he needs his team to fulfill his role as the leader of the Samurai Rangers.

A traveling fisherman named Antonio arrives and claims to be the sixth Samurai Ranger.

Jayden's childhood friend and self-made Samurai Antonio struggles to be accepted by the team as the Gold Ranger.

As Antonio attempts to gain Kevin's respect as a true Samurai, Octoroo devises a plan to create a stronger portal between the Netherworld and Earth via a secret ancient well.

The Rangers must defeat the evil Splitface who steals people's spirits including the Yellow Rangers before they fall into an eternal sleep.

Jayden is poisoned by Octoroo during his attempt to discover the Red Ranger's sealing symbol, which can lock away Master Xandred forever.

With Jayden kidnapped by Deker, the other Rangers must summon the strength to fight a mutant Nighlok without their leader.

When the Gold and Pink Ranger fall under the spell of a dream-inducing Nighlok, the other Rangers must enter the Dream World to save them.

The Rangers try to finish off the dream monster Rhinosnorus while Jayden and Deker finally face off in their ultimate duel.

As invasions from the Netherworld increase, the Red Ranger unites a new team of Samurai Rangers to meet the rising threat.

As the teens continue their transition into their new secret lives as Samurai Rangers, Emily reveals a surprising truth about herself.

The Rangers discover that cracks in the earth are now allowing pools of Sanzu River water to seep into our world from the Netherworld and that a mutated Nighlok is using the evil water to keep from drying out as it wreaks havoc throughout the city.

The Rangers struggle to find a way to defeat a Nighlok with an apparently indestructible shell without the help of Antonio, who has unknowingly lost his Samurai Morpher and cannot be reached. Meanwhile, Bulk and Spike find Antonio's Morpher, but think it's a phone that they must return to the original owner.

As the Rangers attempt to adjust to being led by a new Red Ranger, Jayden struggles to find new meaning in his life.

Jayden finishes his grand battle against Deker and the other Rangers try to convince him to rejoin their team before Master Xandred reawakens.

With Master Xandred back on Earth, the Rangers finally attempt to use the Sealing Symbol to stop him - only to discover that he has a special new defense against it. Now, they must rise to the challenge and find a new way to defeat him and save the world.

In a climactic battle, the Rangers face off against Master Xandred for the last time.