内容简介：This stunning middle grade historical fantasy adventure is a companion to the critically acclaimed A Crack in the Sea.Putnam, the future king of Raftworld, wants more than anything to prove himself. When the water in the Second World starts to become salty and his father won't do anything about it, Putnam sees his chance. He steals a boat and sneaks off toward the source of the salty water. He doesn't know he has a stowaway onboard, an island girl named Artie.