Left alone at home while her husband is away on a business trip, a complex web of hidden emotions unfolds between a mother and her son. The son repeatedly visits the bathroom, drawn to the sight of his mother. One day, she notices his behavior and questions him, only to hear unexpected words escape his lips. What exactly has the son desired from his mother during the husband's absence? As the truth gradually surfaces, their relationship takes on a new form. Buried emotions that everyone secretly harbors come to light within the confines of everyday life.