Kei, an office worker in an apparel company, has never had a good eye for men. Her hopes of getting married to her last boyfriend were dashed when she caught him walking around town with another woman. When Kei decides to drink her sorrows away at a restaurant, her cold and taciturn boss Hideto walks up to her and asks to join her. After one too many, Kei spills her heart to Hideto and the two end up spending the night together, starting their casual relationship. Kei finds herself conflicted by how cold Hideto is to her at work, only to turn on the passion when they're alone. One day, Hideto asks Kei to go with him on rounds...