A recent adversary breaks Kid Danger's arm. This could out Henry's secret identity if he's seen in a cast, so Charlotte suggests making a public display of breaking Henry's arm at school, shutting it in Jasper's locker. Ray thinks that's too plain a plan, so he and Schwoz bring a touch of the Renaissance to school with costumes, medieval accents and a catapult. Jasper, meanwhile, struggles to shed everyone's presumption that he's the infamous and uncaught Playground Pooper. Thanks to Ray's plan going awry, Henry's broken arm is discovered and he must make an embarrassing public confession.
—statmanjeff