After causing another power outage in Hill Valley, thus affecting the upcoming Founder's Day Celebration and angering Clara, Doc offers to fix the town's power plant by increasing its output and producing free electricity... Unfortunately, Doc's upgrades to the system causing everything electrical to turn on (and on and on.) People are unable to turn off lights, lawnmowers, hairdryers, etc... Biff decides to run Doc and his family "outta town." The town residents rally around Biff, who decides to "fix" the power plant. Biff causes everything to explode like fireworks, including street lights, etc... and the residents turn to Doc to shut the system down. Unfortunately, there is no power for the Founder's Day Celebration, which means no rock concerts, no bash-em-up bumper cars, etc... An old