Kouji and Hinata are living together with the intention of getting married. The couple started dating after an in-house camping trip, and the company president planned a camping trip to celebrate, but Kouji was forced to cancel due to a sudden work commitment. Worried about Hinata, who gets out of control when she drinks, Kouji keeps in touch with her frequently, but he gradually loses contact with Hinata. Unfortunately, his worries about Hinata not answering his calls turn out to be true, but Kouji had no idea at the time...