Rokurou 'Rock' Okajima has joined the Lagoon Company, a pirate mercenary outfit headquartered in Roanapur, Thailand. Despite his initial objections, this grim slum of depraved souls and ruthless criminals has become the former salaryman's new home. Stranded, with only his clothes and moral compass left from his past life, Rock is compelled to perform tasks alongside the other Lagoon crew. His arrival has stirred tension among the members, who view him as both an asset and a liability. Ridiculed for lacking courage as he navigates society's underbelly, he must decide whether to stay amid gunfire and brutality or risk everything for a chance at freedom. Whether he chooses the comfort of familiar territory or the liberty of outlaw life, his choice will have lasting effects on the crew that welcomed him.