Xie Anzhen (Sonia Sui) has been divorced for four years and single for four years. She is both a professional office lady and a housewife, and she manages everything in her life in an orderly manner. She is a good mother in the eyes of her daughter, a good boss in the eyes of her colleagues, and a good sister in the eyes of her friends. But who will she be a "good lover"? Although she still has some desire for love, Anzhen always uses her life as a fulfilling, satisfying, and happy excuse. Therefore, she and Tianwei (played by Yousheng) have always maintained a "good friend" relationship. However, even Anzhen herself did not realize that she just did not have the courage to invest in a "sweet but broken love at any time" again. When Anzhen was distressed about whether to accept Tianwei's feelings, her ex-husband Ruifan (played by Wen Shenghao) appeared at this time and pursued her again. Between "family affection" and "love", "peace of mind" and "happiness", "habit" and "change", can Anzhen grasp the happiness of the moment and bravely walk towards the person who can make her smile from the bottom of her heart? Is happiness really that difficult?