Seasons and episodes
Five years ago, Wu Gang was killed by a drug trafficking organization named “K”, and his son Wu Zhen Feng was expelled from the police force. Utterly dissipated, Wu Zhen Feng boards the bus to the borders, while his best friend Chen Yu chases after him relentlessly. Along the journey, the two were almost kidnapped. While saving his best friend Chen Yu, Wu Zhen Feng was brought away by the drug traffickers, and there was no news of him ever since.