Bai Lan had a close friend when he was a child, but she soon disappeared and turned into a memory. It wasn't until not long after that Bai Lan learned that the friend named Jing Zhou was the guardian spirit of the river - some kind of supernatural existence.
Since then, Bai Lan has entered high school calmly, accompanied by some ordinary friends and a few good friends.
Here, he met a young man who could also see the guardian spirit. While criticizing and accepting, Bai Lan's life and themselves began to gradually change while getting along with the young man.
Purpose: Friendship and love are the treasures of life; man and nature should live in harmony