A neighbor dies when potted flowers fall from a balcony of an apartment complex. A man whose father suffers from dementia begins to question if it really was an accident.
Yoko, a high school student, lives with her brother, Kenji. Since they lost their parents early, they have been supported each other. One night, Yoko witnesses Kenji, who is planning to get married, having an affair with Misa. Kenji’s cheating makes Yoko frustrated; however, Yoko felt uncomfortable and unsatisfied with Kenji's fiancé, Kaho, because Kaho suddenly cut into life of Kenji and Yoko. In a weekend, Yoko tails Misa and decides to speak to her. Compulsion and curiosity make Yoko confront Misa, but Yoko is seduced by Misa’s gentle and strong yet unstable character. Then, Yoko tells Misa, “Why don’t we stop my brother’s wedding?” A strange complicity relationship between two women begins.
Day before moving. It's raining outside. Former girlfriend suddenly appears in front of me.