Hugo wakes up from a hangover to find that all of humanity has entered the全民领主 (全民领主) game. Each lord has their own initial territory, be it a village or a castle, and they diligently recruit soldiers, farm, and develop. However, Hugo discovers that his initial territory is a ship, and it comes with a legendary creature—the Sea Spirit! While lords on land fight tooth and nail for resources, Hugo explores new continents and opens up new worlds. When lords on land engage in power struggles for profit, Hugo researches new technologies and unlocks the mysteries of magic. By the time other lords finally begin to develop naval power, Hugo already possesses an invincible fleet and has become the master of the seas! Other lords who want to challenge Hugo with their armies...