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.
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.
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 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.