Children's entertainment presented by Barney Harwood. Jake wants to prove he can be a martial arts superstar by pranking his classmates. With the help of a special energy drink, he gets the super strength he needs to impress the class. And a martial arts expert teaches Jake how to break fake concrete slabs and smash wooden planks with his bare hands. As the prankster smashes through a door and runs out of the karate dojo, will his classmates believe that the drink really gave him super strength?