A pair of good friends Meng Yun (Han Geng) and Yu Fei (Zheng Kai) both broke up with their girlfriends because of a trivial matter, and "refused to redeem and refused to admit their mistakes". The two of them enjoyed their second spring of life in nightclubs, parties and dating apps, and celebrated their "golden single period", which triggered a series of funny stories. Meng Yun and his girlfriend shared joys and sorrows but could not escape the "five-year itch", while Yu Fei and his girlfriend met their rivals and loved and hated each other forever. However, the "slap in the face" of reality came unexpectedly: one pair pushed and pulled and had no exchanges, while the other pair entangled and explained everything. Both pairs of lovers will face the final choice: to meet again? Or never see each other again?