When Theodore discovers Alvin and Simon have a secret club, he promises not to tell anyone if they let him join. When pirates show up at the house, the boys do all they can to protect a treasure chest ...

While Dave is at the store, The Chipmunks meet the new neighbor, who does not like being disturbed as he sleeps. Unfortunately, he works nights, which doesn't bode well with The Chipmunks rehearsing ...