A signal from Kevin's Plumber badge leads Ben's team to a cornfield where local police pursue a Pyronite-human hybrid they blame for crop circles and recent area fires.

While making repairs to the Rustbucket, Kevin steals it. He plans to use it as collateral for some other technology, but it gets stolen from him. Ben and Gwen go after Kevin.

Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.