Su Tao, a clerk at an advertising company, is forced into a desperate situation by being forced to marry. She meets "programmer" Xiao Mo at the blind date table. He was gentle and considerate, and hit it off with her. The two quickly signed a "non-interference" marriage agreement and entered the siege of the contract.
After marriage, Xiao Mo was the perfect roommate. He warmed milk late at night and prepared stomach medicine silently, making Su Tao gradually rely on him. But there are flaws everywhere in the details of life: the high-end suits in the closet, the business trip that coincides with the CEO of Party A, the keen insights into business... When Su Tao worked for Party A until early in the morning to change the plan, and accidentally saw the CEO's signature "Xiao Mo" in the system, the image of the meek programmer collapsed - her husband was actually the big boss of Party A who frightened the whole company.
"What do you think I am?" Su Tao broke the agreement, but in Xiao Mo's panicked explanation, he could see his sincerity under the disguise. It turned out that he had known her and had fallen in love with her for a long time, but he hid his edge for fear of being blocked by his identity. When the ruthless CEO takes off his armor and pursues his love again with sincerity, and when the contract couple gets close to each other amidst quarrels and temptations, Su Tao discovers: This marriage that began with calculations has quietly grown roots called "heartbeat" in countless late-night tacit understandings.
