A family marriage brought detective Su Yi and cardiac surgeon Shen Duo into the same besieged city called marriage.
She is a police officer who is on the front line of life and death, and is accustomed to seeing the dangers of life and death; he is a calm and self-possessed doctor standing in front of the operating table, holding a knife to save lives, but he is indifferent and alienated from the wife beside him.
It was originally a contractual marriage in which each took what he wanted. They agreed to treat each other as guests and not interfere with each other, but the intersections at the murder scene and the operating room, and the conflicts caused by responsibilities and positions, made the two hearts that had already built up their defenses unconsciously get closer. As Su Yi got along day after day, she fell in love with his occasional tenderness and was greedy for this false warmth; Shen Duo was also quietly moved by her tenacity and sincerity.
However, as soon as love sprouts, past grudges, career fate, and hidden secrets follow one after another. She runs into dangerous situations for justice, and he upholds his kindness as a doctor for his duty. The two stand on opposite sides of each other, entangled with love and pain, and intertwined with trust and suspicion. It turns out that the heartbeat of marrying first and loving later was a heart-wrenching disaster from the beginning. She tried her best to love, and he was full of regrets to keep her, but in the end, wearing a police uniform, she could never return to the home with him, leaving him alone, guarding the empty house, suffering in redemption and longing for the rest of her life.
