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

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

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.

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 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.