Ling Xiao and Guan Wanglong are protectors of Zhongyuan Escort Agency. Both of them have powerful Kung-Fu and are resourceful, and are valued by the Agency master. Guan carries a torch for the master's granddaughter Fang, is eager for winning her heart and inheriting the Agency in the future. But Fang likes Ling. So Guan gets angry at Ling and is in league with mafias for cargo plundering and putting blame on Ling.