No one comes to the Second World on purpose. The doorway between worlds opens only when least expected. The Raft King is desperate to change that by finding the doorway that will finally take him and the people of Raftworld back home. To do it, he needs Pip, a young boy with an incredible gift--he can speak to fish; and the Raft King is not above kidnapping to get what he wants. Pip's sister Kinchen, though, is determined to rescue her brother and foil the Raft King's plans. This is but the first of three extraordinary stories of three sets of siblings that collide on the high seas of the Second World. What brings them all together on an adventure of a lifetime is a little magic, helpful sea monsters and that very special portal, A Crack in the Sea.