Zhou Can moved to school in a small town from a big city, a place he didn't like, and kept thinking about going back to where he had lived. His grades are very excellent, so he doesn't have to worry about study in the new school. In terms of personality, he is always quiet, doesn't like to communicate with people, and his ability to make friends is lacking. Yu Jiao Yang is a wild and cheerful girl who has very poor grades in this small town. They are two people who are very different in every way but as the two meet and form a very close friendship, they stay together through every obstacle they go through.
A woman living alone starts to feel uneasy when she discovers traces of a stranger having been in her home. Single and beautiful Fang Hui works alone in the big city. One night, she suddenly hears someone outside the door trying to break in, violently pulling the door. A security guard notices that the floors monitor are broken. This made Fang Hui's peaceful life of living alone suddenly shrouded in the shadow of anxiety. When the night came again, sleeping Fang Hui vaguely notices that someone had entered her room... but she didn't find any signs when she wakes up.
