After finding a job and completing her credits, Ena spends her days working part-time until graduation. Meanwhile, Sugiura, a middle-aged part-time worker, has a hard time learning his job and is hated by other employees, so no one wants to join him on his shift. Ena, the only person who treats Sugiura equally, is the source of her heart. ...and Sugiura and Ena went on night shift together.