When Wang Xiaofei (played by Wang Yi), a high school student who is repeating a grade, sees his classmate Cheng Xiaoyu (played by Zhao Yihuan) in the new class, his dark world of otaku seems to have undergone earth-shattering changes, but Cheng Xiaoyu is obviously not an angel girl in the usual sense. Going to nightclubs with a group of sisters, skipping classes, and smoking in the men's bathroom are just embellishments of Cheng Xiaoyu's daily life, and all this looks like a revenge for her irresponsible divorced parents. Wang Xiaofei doesn't care what kind of person Cheng Xiaoyu is. Her surging heart can make him stand up and faint, which proves everything. Wang Xiaofei launched a frequent paper crane love offensive, and he could also act as a surrogate when Cheng Xiaoyu had an abortion. Wang Xiaofei's efforts finally blocked all irrelevant external troubles and gradually walked into Cheng Xiaoyu's sensitive inner world. However, at this time, a conspiracy involving the underworld involved this group of post-90s who were ignorant of the world...