Ba Tong is an adorable Chinese mutt dog who encountered his destined owner, Chen Jingxiu, in the vast sea of people and became a member of the Chen family. As time passed, the once beautiful home no longer exists, but Ba Tong still waits in the same spot. Its fate is tightly intertwined with its family members....

The newly appointed Director of the Juvenile Prosecution Department, Lei Xu (played by Zhang Yi), along with juvenile prosecutor Du Ziyu (played by Qin Lan), clerk Yang Tian (played by Xu Fan), and bailiff Xu Zhangli (played by Wang Zhen'er), and other members of the Ninth Prosecution Department, are handling juvenile criminal cases when a case suddenly takes a dramatic turn. At the same time, a juvenile suspect in an accidental death case also comes to their attention. Several seemingly unrelated cases are found to be intricately connected, and the prosecutors of the Ninth Prosecution Department uncover the truth behind the cases step by step, bringing the criminals to justice. They work together to protect the youth, nurturing the future with love, hoping for the day when there will be no more cases to handle....