Hina feels uneasy about her married life with her husband, who is in a period of stagnation. Worried about Hina, who is throwing herself into work as if to avoid reality, her colleague Yuta invites her home, where she suddenly receives a confession. Although she should have immediately replied that this is not okay, somehow an expectation was born in Hina's heart. Hina, who weighed her unsatisfactory married life against Yuta's one-sided and passionate love, chose a one-night mistake...