Because of a sad dream and a lonely life, 17-year-old Xiaokui fell in love with the boy in her dream and naively believed that she would meet him in real life. One evening, she actually met a birch tree that looked exactly like the boy in her dream, but there was already a girl angel beside the birch tree who loved him deeply...
The boy in her dream fell deeply in love with her, but eventually abandoned her. Xiaokui transferred such emotions and resentment to real life. In order to get revenge on Huashu, she kept teasing and torturing him, but at the same time she loved him deeply.
Huashu did not fall in love with Xiaokui quickly. He tried to get rid of her several times, but failed and had to endure it. Xiaokui decided to follow him. She followed him to the seaside city where he went to college. She wanted to use shells to recall his past life memories, but he fell in love with his classmate Xu Mianmian...
After graduation, Huashu worked as an anti-drug policeman. In order to carry out an important anti-drug mission, he took Xiaokui to the tropical rainforest on the border of Yunnan. Unexpectedly, Xu Mianmian and Angel also arrived one after another. The rainforest is picturesque, but evil lurks. Here, ideals are being realized, competitions are unfolding, and the girls in the birch life are pushing love to the edge in their own way.