Alvin and the Chipmunks

Alvin develops an alter ego after Brittany rejects his invitation to the Valentine Ball. In a dream state, he becomes a dashing Don Juan, the Valentine heartbreaker extraordinaire, Captain Chipmunk. Brittany is quickly won over and eagerly accepts his offer to the dance. Alvin wakes up at the dance and realizes he's not the dashing, debonair Captain Chipmunk anymore.