Investigator Haru has begun staking out the man behind the smuggling ring with a junior colleague. In the middle of summer, they spend their days in a closed room with no air conditioning, barely getting any sleep and living a life of abstinence... Finally, having reached their limit, the two begin to devour each other, licking each other's sweat. Haru licks the sweaty cock as if drinking it, and squeezes it between her voluptuous breasts. Once the fire is lit, there's no stopping it, and they seek each other out, their sweat and bodily fluids intertwined, driven by their sexual desires. Their relationship will end once the case is solved, but Haru has now learned how to have sex that feels real...