Tony takes his horse Poly to Corsica to visit his aunt Antonia Calvi and cousin Stella who have fallen on hard times. He soon makes friends with a local fisherman called Dominique and a kindly old scientist, Antoine. The three friends find themselves pooling resources to protect Antonia and Stella from a local brute who has made them homeless. It turns out however that the Calvi family may not be so poor after all when a mysterious family medallion offers an unexpected route to great fortune.
