During a time of great upheaval, the citizens of Venice make a pact that will change the world. The landsmen of the city broker a treaty with a water-dwelling tribe of deepsmen, cementing the alliance through marriage. The mingling of the two races produces a fresh, peerless strain of royal blood. To protect their shores, other nations make their own partnerships with this new breed–and then, jealous of their power, ban any further unions between the two peoples. Dalliance with a deepswoman becomes punishable by death. Any “bastard” child must be destroyed.