While Fukuoka may appear relatively tranquil at first sight, it actually harbors a vibrant mix of dangerous figures—killers, detectives, and professional revenge seekers—beneath its surface. Among them is Zenji Banba, a relaxed yet observant detective investigating the operations of other hitmen companies in the region. However, Banba might not be the only one harboring grievances against these organizations, as Xianming Lin, a crossdressing male hitman employed by one such company, begins to grow weary of his lack of assignments and pay. One day, after Lin's current target commits suicide before the hitman can reach him, his company refuses to pay him even half the amount originally agreed upon for the assassination. Frustrated, Lin requests another mission and is offered the job of eliminating Banba, whom his organization believes has been interfering with their business. However, when Banba arrives at his home and finds the hitman inside, Lin surprisingly does not even attempt to kill him. Instead, he offers the detective another option: to join him and form a team. With the offer on the table, exactly how will Banba respond, and just what plans does Lin have in store for the underground world of Fukuoka?