Xu Haoran didn't remember anything after he was brought into the ship's cabin and became one of the members of Crimson Tides, a corsair group that had one mission: to rule over the ocean in the name of the kingdom. There is a strange voice inside his mind called Dart Poison Power that assists him with some kind of magic that summons darts, encouraging him to become better. He notices that he is not the only one who has it. Because life at sea is barbarous and has no rules, Xu Haoran, bearing the name of Sinbad, tries to adapt to the ways of life of the Crimson Tides, who have countless enemies outside the continent. [Congratulations! You have been blessed with Dart Poison Power!] [You have unlocked Lethal Poison that will never be healed.] Until then, Xu Haoran didn't have a choice but to accept his new chapter of his transmigration.