Aya has a peaceful life with her faithful husband, Kazuma. She is proud to have a husband who takes care of her and she believes that she is the "happiest wife in the world".

However, one day, she noticed a suspicious message from Kazuma's phone and then he started returning home late. Aya is beginning to suspect that her husband is having an affair but she has no proof. Should Aya pursue her husband's affair or not? The confusion of married life begins.