Satoshi, a part-time worker living semi-cohabitantly with his girlfriend, constantly clashes with her due to his inability to understand women's feelings. While confiding in Alice, his senior at work, about his relationship woes, Alice, having overheard their conversation, seduces and gets Satoshi drunk, leading to a drunken sexual encounter. From then on, the two engage in intimate acts repeatedly during their work shifts. However, Satoshi grapples with guilt towards his girlfriend...