In the television show, Floppy wears a collar around his neck with a golden key upon it. The key is magic, as the title suggests, and seems to do some strange things whenever Floppy wishes for something. It transports the children and sometimes their grandmother, to other worlds, where they have exciting adventures, such as dealing with trolls in an underground cavern, being characters inside a computer game, or finding the Fountain of Youth. In the books the key is kept in a box which opens the door to a dolls house and Floppy does not go on all the adventures.