Emmett Brown's flux capacitor is stuck in the new millenium and he needs to get it back to 1988. It seems Doc's pet dog Einstein was chasing a stray cat through his workshop when he accidentally knocked the capacitor off Doc's desk causing it to activate and jump into the future.
Now the experimental device is broadcasting a signal (which has been intercepted on this web page) with all the information needed to locate the power source. Doc needs someone to find this source -- a gray container with various plastics which are melted for energy -- and confirm there are enough plastics to fuel the return trip to Doc's workshop.
Can you help Doc Brown reset the flux capacitor so it can return to 1988?