A seemingly perfect middle-class Chinese family faces an unprecedented situation when Lei brings a man home on NYE to pretend to be her boyfriend. Her same-sex girlfriend's unexpected visit intertwined her with a real intimacy crisis.

Wu Xiao Bei, a girl born in the 2000s, suffered from a sudden breakup. After falling out of love, she repeatedly jumped into madness and decadence and finally decided to fight back! Xiao Bei stumbled through the "12 things not to do after falling out of love": transform yourself, pretend to be rational, and deal with all kinds of people from the opposite sex... However, can this long list of tips for a lovelorn really lead her out of her heartbreak?

Ph.D. candidate in Physics Mu Cheng He catches a third-year student in English Xue Tong cheating on an exam. When he even becomes the substitute teacher in her elective course Russian and makes her study with him after classes, her hatred for him only grows. Over time, however, Xue Tong discovers Teacher Mu’s true character and comes to secretly love him.