It's My Party / Keeping Up With the Humphries.It's My Party: Kevin fears that his birthday party is going to be lame, so Alvin decides to throw a paintball party at his house. Eleanor wants to join with the boys, but the boys will not let her play with them because no girls are allowed. In the end Theodore asks Eleanor to replace him and defeat the boys. Eleanor proves to them that girls can beat boys at anything if they want to. In school, Derek asked Eleanor if she wants to be on his team, but Eleanor says that she is busy.
Keeping Up With the Humphries: The Chipmunks battle with Bocarter Humphrey at a game over the Internet, but because Bocarter has a bigger and more powerful computer, the boys lose the game to him. Wanting to beat him, they attempt to build a new computer for themselves, by swiping every processor in town that they can, creating an energy crisis in the process because of all of the electricity that their new computer consumes and the excessive heat that it puts out.