ALVINNN!!! and the Chipmunks 2015 Season 2 Episode 24 - Summer Camp / Wacky Wednesday >Alvin and Jeanette wake up to discover that they are each inside the other's body, and conclude that it is because of a mishap involving Simon's newest invention from the previous day: a switch ray. While Simon plays hooky so he can work on rebuilding his ray that he had taken apart, believing it to have been a failure, Alvin and Jeanette must spend the day at school pretending to be each other; this causes a rift between Jeanette and Brittany when Alvin (as Jeanette) tells Brittany that she is the one in the wrong in their latest argument, while Jeanette (as Alvin) tries to call off an impending fight between Alvin and Derek after school that day.