Eleven days after sailing away from the only home he's ever chosen, the Mariner pulls a dead man's boot off a reef — and finds proof that Dryland's location has leaked. What was once a myth is now a target, and a new power is rising from the ashes of the Deacon's fallen empire: Kade, a former engineer turned warlord who doesn't preach prophecy — he runs numbers, and the numbers say the mountain belongs to everyone still drowning.
Racing to outpace a fleet of forty hulls, the Mariner gathers an unlikely crew — a fugitive navigator, a demolition-happy salvager, and the people of Dryland itself, now armed with trenches, walls, and a girl who once carried a map on her back and now draws her own. What follows is a desperate chase across open water, a raid on the enemy's own flagship, and a siege that will decide whether solid ground can ever really be kept — or only, ever, defended.
Waterworld: The Hollow Tide is a fast-moving, action-driven continuation for readers who never stopped wondering what waited past the horizon.