Xia Xingkong, an 18-year-old senior girl in high school, changed her identity and hid in another city where she was unfamiliar because of a hurtful incident. She met Mu Zhan, the male protagonist who was one year younger than her and made jokes. After a series of friction and attraction, Mu Zhan fell in love with Xia Xingkong. When his disguised identity was exposed, Xia Xingkong, who was facing a disaster, was safe with Mu Zhan's help. She thought that she and Mu Zhan would be able to walk away safely after getting out of the quagmire, but who knew that fate would still be unwilling to let her go.
The heroine is late-maturing, independent-minded, and an illegitimate daughter.