Alvin Ackerman feels left out when snowboarding champion Max Asher stays with his family during training season.

Max and Shred fall for the same girl, so they decide to take her on a date; Abby is on a mission to get Quinn to join the school soccer team.

Alvin and Max grow tired of being roommates; Abby and Howie help Lloyd write a novel.

Alvin and his family are charmed by Max's snowboarding nemesis, Yuud Nuuderuud, and refuse to believe it when Max claims Yuud is a cheater.

A giant snow storm traps the Ackermans inside their house; Max has a panic attack and the family takes unusual steps to help him through it.

Alvin's nemesis, Wendy Chong, sabotages his invention; Max tries to make it up to him by sneaking them into a party.

Abby accidentally auctions off Max's lucky snowboard, and he is convinced that he can no longer win.

Alvin faes a dilemna when he decides to get a sponsor; Howie makes a special snowboarding suit for Max.

Alvin and Max have to care for a baby-simulator doll to pass Life Skills, but they accidentally destroy the doll.

While ice fishing, Alvin and Max are trapped in the hut; Diane and Abby try to calm Howie after she sees a scary movie.

Max opens a box and reveals a secret Alvin's kept since Abby's ninth birthday; the boys try to make up six years of birthdays for Abby.

Max gets a job at the Yogurt Yeti in order to help Alvin with a contest

Alvin and Wendy form a truce to compete together in the State Academic Bowl; Abby hopes that Derek will ask her to prom.

Alvin and Abby live in each other's lives for a bet; Lloyd tries to clean a pool that has been neglected for years.

Alvin and Abby get help from a TV series to help save the Yogurt Yeti; Howie is put in charge of Max's fan site.

Max employs Abby to ghostwrite his autobiography. Howie's horoscope stops her from helping Alvin.

Max and Shred are left in charge of the Junior Porcupines and are each determined to take the scouts on the best camping trip ever. Abby gets an unusual job at the Yogurt Yeti.

Shred takes things too far after he discovers the joy of playing pranks; Diane tries to get a possum out of the house; Lloyd tries being the 'bad cop' parent.

Max heads to Switzerland for a big race, but his rival foils his plans by blackmailing him. Elsewhere, Howie constructs a high-tech home-security system for Lloyd.

When Max becomes homesick, Alvin, Howie and Abby try to cheer him up by throwing him the best birthday party ever.

When Howie needs Alvin's help with her entry in the Top Ten Under Ten science competition, he agrees to become her assistant - and quickly regrets it. At home, Max makes the mistake of bringing table tennis back into the home, reigniting Diane and Lloyd's obsession with the sport, and leaving he and Abby to deal with the mess.

Alvin decides to lie about his severe dog allergy when Max's dog from Vermont, Boardwax, miraculously shows up. But the plan backfires when one of Alvin's massive sneezes sends Boardwax running right out the door. After discovering she's not very good at improv, Abby is determined to become the best and asks Kaylee to mentor her.

When Alvin is overwhelmed with work Max convinces him to take a sick day. Meanwhile, Lloyd and Diane have a hard time coping with Abby and Joey's breakup.

Max is smitten with a cool snowboarder girl, but is thrown when Alvin points out that Max is basically dating himself. Convinced one of them has to change, Max inadvertently ruins the relationship. Abby and Lloyd get some father-daughter time while camping out in hopes of spotting the mythical Blizzard Springs Ice Gryphon.

When Max's syrup mogul cousin Ozzy comes to Blizzard Springs to judge the annual syrup competition, Max is pumped. But when they realize Ozzy is staying with them, Alvin and the family quickly find their houseguest too much to handle. Meanwhile, Abby makes the mistake of getting driving lessons from Diane.

All of Max's hard training in Blizzard Springs finally pays off when he wins the Winter Cup. But the Ackerman's are torn when they realize that means Max is going to hit the road to join the snowboarding tour, leaving them all behind.

Max wants to be the new school mascot, and Abby undergoes focus training for college.

Abby is frantic preparing for her last school dance, while the boys plan a double date they won't soon forget.

Abby gets stuck in an elaborate lie that even Max and Shred have to help her with.

Max worries when his career aptitude test comes back inconclusive. Abby convinces Max that he could make a good life coach. Max then offers advice to Abby, Diane, and Lloyd, which later backfires. Meanwhile, Alvin puts Howie in charge of reprogramming Mr. P so he will stop mocking him.

Alvin tries to sell his latest invention with the help of Max. Wendy Chong attempts to recruit Howie as a partner in science.

The family is surprised when Alvin suddenly has a girlfriend, but quickly grow fond of her. Max however smells a rat and stands up for his best bud when he thinks this new love is just using Alvin for student government gain. Howie is testing the intelligence of a pig, but runs into trouble when the Ackermans keep treating it like a pet.

After Alvin claims not to have any fears, Max, Howie and Juliet set out to scare him. But with Diane and Abby away at a college interview, Lloyd is left in charge and does not know how to handle a potential ghost in the house.

Alvin and Juliet have been dating for a while and Juliet wants their parents to meet. But what seems like a harmless idea quickly escalates into the parents forbidding Alvin and Juliet from seeing each other anymore! At the same time, Max and Abby discover Howie has been keeping an amazing snow fort secret from them.

Alvin forgets an important anniversary with Juliet, then makes things worse when he tries to follow the not-so-sage love advice of everyone in the family. But eventually, with Abby's help, Alvin finds the confidence he needs to win back Juliet back. Meanwhile, Max meets his second biggest fan, Harley, and Howie's not happy about it.

When Max discovers that Alvin is secretly entering a battle of the bands to impress Juliet, he insists on joining his band! Abby comes up with an idea to keep the parents from missing her too much when she's away at college.

Abby is going away to college next year and realizes that she doesn't have any fun brother-sister memories of Alvin to take with her. So she sets out to create some new memories with him. Max undergoes a dramatic image change.

When Max's career aptitude test comes back inconclusive, he struggles to discover what he will do after snowboarding; Alvin tasks Howie with reprogramming Mr. P.

It's time for the huge, annual Blizzard Springs Science Fair - the town and Alvin are buzzing with excitement! At home, Lloyd becomes obsessed with beating Howie at her new board game, "Unicorns & Minotaurs."