After a mission, anti-drug police officer Mo Nian is killed with a single stab. When she wakes up, she discovers that she is getting married, and her husband is a peerlessly handsome man. Her parents are loving, her older brother dotes on her, and her in-laws are just her grandparents, who are also warm and kind. Though she runs into a terrible best friend and a scheming mother-in-law, her life is, overall, a happy one. Mo Nian and her husband Su Xin are deeply in love, but the many incidents around them help Mo Nian, a police officer, discover her purpose in this world. Together, she and Su Xin gradually make their way to the heart of the circle...