On October 25, 2025, Marty McFly, a 17-year old high school senior, visits the home of his friend, an eccentric local scientist named Dr. Emmett L. Brown, but finds that "Doc" is not there. Moments before Marty had walked in, a report came across the television about missing and stolen plutonium. As Marty walks into Doc's house, he kicks his skateboard and it runs into a box of plutonium that is under Doc's bed. Marty, however, does not notice the box and proceeds to hook his guitar up to the giant amplifier. Marty turns the amplifier settings to their highest points and strums his guitar. The amp blows up and sends Marty flying into the shelves behind him. Marty soon after receives a call from Doc asking him to meet him at 1:15 AM in the parking lot at Twin Pines Mall and was told not to use the amplifier, even though he already used it. As Marty agrees, the clocks in Doc's basement chime the hour. When Doc Brown remarks that the clocks are 25 minutes behind, proof that an experiment was successful, Marty realizes that he is late for school.
