Genius tech tycoon Chen Yan has been imprisoned for ten years. Upon his release, he is already in the terminal stage of cancer with little time left. Xu Zhiyi falls deep into misunderstanding, believing that Chen Yan did something wrong to her, humiliating him in every possible way and making him work as a cleaner in her company. Chen Yan chooses to conceal the whole truth, enduring the resentment while secretly repairing the company's system, fighting business competitors, and pushing his frail body to develop an AI model in the hope of solving the Xu family's hereditary disease and protecting his daughter Chen Niannian.