After a nightmare about the Hideous Harold movie, the boys mistake Dave for him; Simon is fed up with his family and builds a genius helmet to help with him.
The melodramatic episode which the Chipmunks' very first adopted kitten gets killed in a traffic accident, and Dave sympathizes with the Chipmunks noticing they are heavily depressed due to the loss.
Alvin and Dave switch roles as father and son ruining the chores by flooding the house; then Simon turns himself into an irresistible playboy to steal Alvin's fame among the girls using an elixir.
