Dong Ke (Jin Songsu), an introvert, has a strong sexual desire, but he can only rely on fantasy to satisfy it. He is eager to indulge in an instant and has been waiting for a one-night stand. Shen Xia (Jin Sirong), a big girl, has had many emotional experiences. Those failed loves have made her heartbroken. Now, she no longer believes in love. She temporarily relieves her depression by sleeping with different men and uses physical pleasure to cover up her lonely heart. One day, Dong Ke and Shen Xia met by chance in a Chinese restaurant. They drank and chatted, as if they were good friends who had not seen each other for many years. Dong Ke, who looks honest, aroused Shen Xia's sexual interest. She had sexual fantasies about Dong Ke and imagined the scene of having sex with him. Dong Ke also saw the lust revealed by Shen Xia, so the two began to have crazy sex after drinking, biting and devouring like two beasts, lingering all night. A night of passion in bed broke Dong Ke's world of lust. He fell in love with Shen Xia, who was nostalgic for the feeling of sex. He asked for Shen Xia's contact information and started to pursue her in order to be together often. Soon, Shen Xia accepted Dong Ke's pursuit, and the two began to live together and started to have more crazy sex. They rarely chatted and talked, and sex was the only language to communicate with each other. From the bed to the floor, from the sofa to the toilet, from the refrigerator to the edge of the bed, as long as they were at home, no matter when and where, they could maintain this fragile relationship by having sex. In addition to having sex, Shen Xia and Dong Ke gradually got to know each other in their cohabitation life and found that there was a big difference in their personalities. They often quarreled over some trivial matters. In the end, there were more and more conflicts. They gradually became tired of each other and agreed to separate for a while. However, Dong Ke, who was brought happiness and relaxation by sex and fell in love with sex, found that he had fallen deeply in love with Shen Xia. He realized that he could not maintain this relationship by having sex alone, and Dong Ke, who was ready to love her sincerely, made up his mind to propose to Shen Xia. However, simple sex is sweet, but love may be full of bitterness. Shen Xia, who appears to be open and dissolute, is actually deeply trapped in an emotional whirlpool and cannot extricate herself. Facing Dong Ke's proposal, she is hesitant.