This cartoon stars Bruce Willis as the voice of an 11-year-old boy who becomes a top spy for a secret espionage organization. The organization, named Globe, contacts Bruno via his computer and a special gadget watch, and are completely unaware of their top spy's young age as he hides behind a computer simulated avatar of a full grown man (in the image of Bruce Willis). The members of Globe that Bruno works with in person, such as Jarlesburg (voiced by Tony Jay) and Harris (Mark Hamill), are unaware that Globe does not know Bruno's actual age, and assume that the organization must know what they are doing sending the boy into dangerous situations. The episodes consist of Bruno managing to live a double-life without his parents' or friends’ knowledge. In one episode, he tells his parents that he is camping in the garden and he sets up a torch to project a fake silhouette of himself onto the side of the tent so that it looks like he is inside it. Meanwhile, with an alibi set up, Bruno will be out saving the world or foiling a major heist with the aid of his British spy partner Jarlesburg. One episode, one of Bruno's classmates caught Bruno on camera of being a spy and tries to blackmail him; however, Bruno erased the video tape and his secret is safe and his classmate is unable to exposed him. Later in the series, Jarlesburg quits being Bruno's partner after hesitating to fire a weapon and afraid he'll hit Bruno. Bruno objects Jarley quitting the team. Jarley was being a coward for a while until he came to his senses and return to be Bruno's partner. He apologizes to Bruno for being stupid because his quit. Along the way they usually meet Harris (a spoof of the character 'Q' in the James Bond books and films) who supplies Bruno with gadgets which Bruno usually finds a use for later on in the episode. As well as voicing the title character, Willis was one of the executive producers and also co-wrote and sang the theme song for the show with backing singers.