Skylar introduces Kaz and Oliver to her longtime friend Experion, a cool and charming teenage superhero. But when Oliver catches Experion in an evil act, he must convince Skylar that her bestie is not as nice as he seems.

Oliver accidentally steps into the line of fire of a superhero's beam during a routine test, which reverts him back to being 4 years old. While Kaz tries to fix Oliver, Alan develops an undesirable and embarrassing power.