While her husband is away on a two-year work assignment, Ayaka Sugimoto finds herself increasingly overwhelmed by pent-up desires, losing control amidst the monotony of daily life. The one who rescues her from this emotional turmoil is her son's friend, whom he brings home one day. Her relationship with the young man brings profound changes to Ayaka's inner world. However, when her son accidentally discovers them together, she panics. Overcome by anger and desperation, she lashes out at him, shouting, "Fine, then you deal with it!" The story plunges deeper as her son's response to her outburst unfolds.