The Magic Key is a series of books published for children as part of the Oxford Reading Tree. Co-written by Alex Brychta and Roderick Hunt, and primarily follow the lives of three children, Biff, Kipper and Chip Robinson, their parents and grandmother, and their dog, Floppy. In the TV show Floppy wears a collar with a golden key. The key is magic and seems to do some strange things whenever Floppy wishes for something. It transports the children and sometimes their grandmother, to exciting adventures, such as dealing with trolls in an underground cavern, being characters inside a computer game, or finding a fountain of youth. In the books the key is kept in a box and Floppy does not go on all the adventures.