The article mainly tells a series of stories that happened after the modern woman Li Sisi traveled to the Northern Song Dynasty. Li Sisi and three dormitory classmates traveled to the Song Dynasty for unknown reasons. Although she knew the other three people who traveled to the Northern Song Dynasty, she was the only one who retained her modern memory. All four people have different identities. Li Sisi traveled through time and became Li Shishi, a famous prostitute in ancient times. A lot of things happened around her: she and her sweetheart Lu Jiang could not get together due to various reasons; her relationship with her confidant Zhou Bangyan was complicated and entangled; she and Zhao Ji, a person she hated, fell in love out of disgust but parted ways; there were people who cared about her, people who protected her, people who admired her, and people who were jealous of her; there were people who framed her, and there were people who coveted her. Please take a look at Li Sisi's amazing experience of traveling through another world.