The Onioneers are on winter camp, and Lemony is hoping to win all of the merit medals. But she and Mr. Highpants get stuck on top of Mt. Onion. Now Yakkity, Keo and Wanda must save them.

Yakkity becomes jealous when Keo gets a new pet so he decides to order his own pet and what he gets is a snakehead fish that can live outside of water. Yakkity grows close to the fish but Keo warns that the snakehead fish is a wild animal that shouldn't be kept captive.

Yakkity becomes a bike-riding ice cream salesman. But he starts eating all the merchandise (which counts as stealing) in order to get free stuff.

When Professor Crazyhair's experiments in the basement blow up the dining room a second time, Granny Yak evicts him from the house.