A system engineer husband is busy with work, often returning home late, while his wife, Kanna, prepares meals daily and waits for him. Though their days are tough, their marital bond is strong, and they've been living happily together. However, one day the husband makes a serious mistake at work and is held accountable. As a result, his career suffers a major setback. Wanting to support her husband, Kanna feels she must make a change. To protect their future as a couple, she is forced to make a difficult decision—one that will drastically alter the course of their lives.