Brian is convinced that his cheerful， joking father is still angry at him for accidentally destroying his valuable Superman #1 comic book from 1939. Like his father， Brian collects comics. So he s not surprised when Mr. Somerset， the owner of the town s general store， gives him one. But he is surprised to find that the comic book is full of blank panels and that a metal ring falls out when he opens it. Brian s best friend， Paul， finds a dial on the ring. He sets it to 75 million B.C.， presses a button labeled "Timequest，" and the boys suddenly find themselves in the middle of the Atlantic Ocean battling a prehistoric beast! They decide to use the ring to travel back to 1939 to get another Superman #1 for Brian s father. But when a string of misadventures threatens to alter their life back at home forever， Brian realizes that the comic doesn t matter as much as getting back to his mom and dad.