During a family trip, Chihiro finds herself alone with her son and, wanting to cherish their time together, spends the entire day having fun. However, on the way home, her son grows tired and starts throwing a tantrum. Seeing this, Chihiro decides to let him indulge. He clings to her, then begins teasing her playfully. Amid a warmth that transcends their mother-and-son bond, their relationship gradually deepens.