Ma Liang, a wandering boy, met by chance Xuan Xuan, a six-year-old boy forgotten by his family and neglected by others. The similar fate made the two lonely teenagers warm each other and gradually approach each other. They built a small family together, and the two restless souls had a home from then on. However, an accident broke everything, and a group of uninvited guests broke into their lives, making the gears of the two teenagers` fate turn again, and this time, Ma Liang decided to change everything.