Hanano (Shizuka Miyamoto) has been married to her husband for five years, enduring his domineering attitude and strained relationship with her stepson, Akihiko, while secretly engaging in repeated affairs. One day, she tries to end her affair, asking her lover, "Hey... shouldn't we break up?" But her lover, Kosuke, deeply infatuated with her, refuses to let her go. That night, Hanano's phone is flooded with incessant calls from Kosuke. Suspicious, Akihiko begins investigating and eventually uncovers the truth about her infidelity. A shocking story unfolds, depicting Hanano's emotional turmoil and the complicated web of relationships with her lovers.