In this episode, a strange incident with Alvin's new teacher at his "new" school finally jump-starts our hero into taking action. Vowing to get to the bottom of whatever is going on, he decides that... the best way to go about it would be to break into Dennis' apartment, no matter how high the risk, and investigate it for clues. To do so, Alvin enlists Morgan as his primary partner in crime, at the small and pleasant cost of a quickie with the brash gal in a public place. However, it soon turns out that neither Morgan nor Henry, his other accomplice, are very good at keeping secrets... which pretty much means that a solitary break-in has no choice but to turn into an entire class excursion!