Wife Natsumi (Eri Kikuchi) lives an ordinary life with her husband and son. One day, her husband invites his coworker, Matsumoto, over for dinner. Matsumoto is Natsumi's former lover, and seeing him again stirs intense emotions deep within her. The profound feelings and memories they shared as students remain etched in her heart. Torn between her family's happiness and her own desires, Natsumi finds herself at a pivotal crossroads in life. What path will she choose?