Shunsuke and Ichika are living together with the intention of getting married. The company president plans a celebratory camp for the two of them, who started dating at a company camp, but Shunsuke is unable to go due to sudden work commitments. Shunsuke has been in frequent contact with Ichika out of concern for Ichika, who can't control her drinking, but as the night goes on, he becomes unable to contact Ichika. By the time Shunsuke felt something was wrong, she had already reached an irreparable situation...