The Chipmunks and Chipettes team up together to compete in a dodgeball tournament. They learned that an opposing team has an unfair advantage using technology. Later on, they discovered that an enraged Theodore could be their secret weapon.
Alvin accuses Dave of yelling at him too much, so a therapist moves in; when the school digs up an old high school time capsule, Miss Smith and Dave work together to keep an old secret.