A psychological drama about unhealthy interpersonal relationships explained often through elaborate flashbacks. Takanako Mayuko, who grew up in an idyllic mansion with the perfect loving family, blames her childhood best friend for everything that has gone wrong in her life. While maintaining the façade of friendship, Mayuko finalizes the revenge she’s been secretly plotting for decades.
Kanzaki Miwa is married to Kanzaki Hiroki and is a full-time housewife. She used to work for a large company but made the difficult decision to quit her job and become a full-time housewife in hopes of having a child. But her marriage life isn't going very well as her love for her husband has cooled considerably. Hiroki acts like an ideal husband when around others, but he speaks harsh words to her when they are alone. She lives her days like a bird in a cage. One day, Miwa meets her childhood friend Fuyutsuki Ryo, whom she hasn't seen in years. Back then, Ryo was like a hero to her and loved by her. When she was in trouble, he always came and helped her. They make the fateful decision to spend the night together, and Miwa later finds out that she is pregnant with his child. She doesn't want to divorce her husband and become a single mom because she doesn't have a job. To protect her baby, she decides to tell her husband that she is pregnant with his child.
Le Jun Kai is a man who lives his life trying to foster a hatred for his enemy and devising ways to seek revenge for his former lover and unborn child. He decides to marry his enemy's daughter, Le Yi, and then proceeds to mistreat her and make her life as miserable as possible, but yet she bears this without retaliation. A problem arises when Le Jun Kai begins to realize he might have feelings for Le Ye Zi.
