It's bad enough that Flynn's little sister Sally is always tagging after him, but this particular time she brought her cat Nebu, too. Flynn's been looking forward to exploring the beach, but now his morning is spoiled by being asked, yet again, to "look after" Sally. He has to admit though, that Sally was the one to find the huge wooden crate washed up on shore, a box big enough to hold both children and the cat. Playing pirates is fun, even with Sally, and Flynn's not overly alarmed when Sally points out that their crate has drifted away from shore -- until they both realize that they're unable to direct it back to land. The game quickly turns to frightening reality as Flynn tries to cope with Sally, Nebu, and his own anxiety when the current takes them further and further from their familiar beach. A suspenseful adventure is realistically presented from a child's perspective, as Flynn realizes there is little he can do to save himself and his younger sister. (Ages 9-12)