Otoji sets out on a mission to locate his older sibling in the gritty city of Yokosuka. Along the way, he meets Joe, an elegant sex worker who offers to lend a helping hand. As they travel together, Joe acquaints Otoji with the alluring world of prostitution and enlightens him on becoming versatile in both dominant and submissive roles. Nevertheless, as they delve further into the industry, they come face to face with its dark underbelly.