Keiji Noma operates as an undercover narcotics enforcement agent alongside his senior partner Riko Ikazuchi. Their investigation requires them to pose as a married couple while infiltrating an apartment building functioning as a criminal hideout. Suspicion arises among surveilling criminals due to the absence of audible intimacy during nights, jeopardizing their cover. To authenticate their marital facade, Noma instigates physical contact with Riko, triggering a series of progressively intimate operational scenarios. These include confined-space encounters in vehicles and incidents involving aphrodisiacs. During a critical mission phase where Riko faces kidnapping, Noma employs a Smith & Wesson Model 36 handgun. Subsequent operations integrate confiscated Norinco Type 54 pistols seized from criminals. As investigations advance, the mandated physical interactions between Noma and Riko transcend professional boundaries, evolving into authentic mutual emotions and attachment. Despite resulting personal complexities, both agents steadfastly prioritize their law enforcement duties and pursuit of justice.