In two hundred B.C. a migrating Celtic tribe led by one of the most prominent women in history settled on a lonely island in what is now Scotland. She was the prophetess Veleda, a Druid. She was raped by a mytical creature called a Selkie and the Druid magic combined with the strength of the Selkie, the Mermaid was born. One of the Druid offspring is Catherine, a young divemaster who operates a scuba-diving buisness on Bainbridge Island in Washington State. In the cold black waters of Puget Sound, Steve and Gil, an oceanographer and photographer charter Catherine's boat. By day the divers...