Verne has become a video addict. His game of choice, or addiction, is called BraveLord and Monstrux. After neglecting his duties because of the video arcade game, Doc and Clara punish Verne to their house and doesn't want him playing video games. Jules, with help from Marty, attempts to placate Verne by using a device that would transfer the game electronically to Verne's bedroom TV screen, thus enabling him to continue to play. Unfortunately, something goes haywire with the wiring and the characters of the game come to life, while Doc is transported into the game. BraveLord, a "He-man" muscle man, ends up in Verne's bedroom while the vile Demon Monstrux ends up at Biff's house. Entering the arcade past the lava, Verne, Jules, and Marty must defeat the Demon Monstrux, get it and BraveLord