In-seon, still holding on to her late husband's ashes three years after his suicide, decides it's finally time to let him go. But when her daughter, Su-yeon, returns home and resists the idea, In-seon begins to question her decision. As tensions mount, Su-yeon tries to reclaim the ashes—only to accidentally shatter the urn. With no other choice, mother and daughter must confront their long-buried grief… and say their final goodbye on a bright, sunny day.