Husband Ethan Chandler goes out with his father-in-law He Shouyi, and unexpectedly spots his wife who was supposed to be resting at home. The wife previously claimed she was staying home sleeping, but is now walking hand in hand with a strange man at the mall. Ethan immediately calls to question her, but the wife not only denies it, even accuses her husband of not trusting her. Furious, Ethan is about to go downstairs to confront her face to face, but is stopped by his father-in-law. Everyone thought the father-in-law would side with his biological daughter, but unexpectedly he directly stands on his daughter's side. How should one balance family ties and justice? What unknown secret is the wife desperately hiding?