Li, who is in his 50s, lives in a small mountain village in the northeast. His son is already married. His daughter is the only college student in the village. By chance, Old Man Li dug up a wild ginseng. Old Man Li, who ate the wild ginseng, became bigger and his sexual desire became stronger. His son Li Qiang went to work in the city, leaving his daughter-in-law Huahua alone to stay in the empty bedroom. One day, Old Man Li fell asleep on the kang after getting drunk. His daughter-in-law Huahua was lonely and unbearable to take off his old man's pants and secretly had sex with Old Man Li. Afterwards, Old Man Li found out that he took the initiative to find Huahua. Since then, the two have maintained this incest relationship between the husband and daughter. After that, the article also introduced the passionate stories of Old Man Li, mother and daughter selling melons, and his daughter's neighbor's daughter.