The action-packed third installment in Peter Brown's internationally bestselling The Wild Robot series takes Roz on an under-the-ocean journey to save her beloved island! Life for Roz and the animals on their island is perfect: wild, natural, harmonious. Her son Brightbill has even found a mate! But then, one day an injured seal washes ashore and warns of dangerous, cloudy waters that are flowing toward the island—and soon the animals are forced inland to fight over dwindling resources.