It's a turbulent summer for Sirena Shane. Back in Texas, her family's splitting apart, but at her aunt's beach cottage in Rhode Island, everything is different. Especially with him around.   Pilot.   He's the lifeguard with extraordinary looks and mystical powers, who's unlike any boy she's ever known. He's the one who both saves her and makes her feel lost at sea.   So begins an unforgettable summer of obsession and discovery.