When he was a child, in midsummer, in Qinglian Village, Wei Rong rescued Xu Cheng who fell into the water. A kiss in the form of artificial respiration aroused Wei Rong's passion, and from then on he transformed into Xu Cheng's little tail, clinging to him and annoying him. But God always likes to play tricks on people. Before Wei Rong could respond to his love, Xu Cheng's family suddenly moved away, leaving behind memories and a void. Xu Cheng didn't see Wei Rong's tears, and Wei Rong ignored the fat man's eyes behind him.
A few years later, Wei Rong appeared in a bustling urban bar, wearing revealing clothes and unruly eyes. There, she met a cold but clean boy with a cinnabar mole in the corner of his left eye. After they escaped from the villain, the boy drew a knife on her. What happened? What have Wei Rong, Xu Cheng, Er Pang and the other three experienced these years? What kind of ties are there?