Augie Sweetwater is a brilliant 11-year-old with a gift for inventing amazing things. Coop Cooperlick is the new kid in town, a 14-year-old with a passion for rock climbing and a knack for quick action. Mika Deerwood is a lovely 13-year-old Native American attending the prestigious Anacortes School with Augie and Coop. With the help of a rather special dolphin named Leo, they solve the mystery of disappearing families in the San Juan Islands of Washington state.
