When delivery boy Lin Feng struggles to survive, the ancestral jade pendant activates the "Secret Records of the Green Bag" and "The True Secret of Xuanwu". He healed the wounded, defeated powerful enemies, and became famous in the underground boxing ring as "Hidden Dragon". After acknowledging his ancestor and returning to his clan, he used his medical skills to help the country rise, but was framed by his cousin and the director of the Special Security Bureau. He faked his death and was reborn to take revenge with a dual identity. After revealing the truth, he gave up his power and became a legend to protect the city with his best friend.
