Howie Firth follows the trail of an old Shetland folktale from the island of Fetlar through sea and sky, to find out who rode the gray horse and ran the red one. The search goes across Europe and south to the Greek island of Paxos and a message for a ship that fascinated the Roman Emperor Tiberius; then to Siberia and ancient Egypt and up into the night sky for ship and pilot, and the Fetlar horseman – and also a bear.