A smart and serious marine biologist and a fun-loving and laissez-faire dive instructor must team up to save their beloved reef from being destroyed before it's too late.

When two girls disappear into the woods and return three days later with no memory of what happened to them, the father of one girl seeks out Chris MacNeil, who's been forever altered by what happened to her daughter fifty years ago.

Former orchestra conductor Gethsemane Brown moves to Ireland to teach at a boarding school. After deciphering a musical message, she meets a renowned composer's ghost who is rumored to be behind the death of his lover.