Sibur-Disk is a world in which everything is in constant motion. Islands, small and huge, drift along the gravitational waves encircling the central body. There are cities and villages on the islands, people live. If you equip the island with a gyroscopic propulsion device and install sails on it to collect sombra, then in such a city you can go anywhere under sails. Even in search of an ancient treasure. But if you recruit a crew in Zei-Zone, then you shouldn’t be surprised that the team will include those whom everyone considers the last scum, whom no decent captain will let close to his city. However, a team of desperate windwalkers, for whom this flight may be the last chance to show what they are really worth, may be capable of much. Even for something that no one expected from them...