When Seth Brundle makes a huge scientific and technological breakthrough in teleportation, he decides to test it on himself. Unbeknownst to him, a common housefly manages to get inside the device and the two become one.
The comic mishaps and adventures of a young boy named Ralph, trying to convince his parents, teachers, and Santa that a Red Ryder B.B. gun really is the perfect Christmas gift for the 1940s.