Yuuji and Rena are living together with the intention of getting married. The company president plans a celebratory camp as a smart arrangement for the two who have started dating at an in-house camp. However, Yuuji has to do some urgent work. When Reina gets drunk, she can't stop herself and I'm concerned about her, so I've been calling her frequently, but gradually Reina stops answering the phone, and when I think I've finally gotten in touch with her, she's breathing heavily for some reason. ``Something is wrong...'' By the time she thought that, the situation had already become irreversible.