Lin Chen, the Dragon Head of the Hidden Dragon, avenged his father and guarded the border for seven years. Because of a top-secret mission, he was forced to lie that he had been imprisoned, leaving his wife and daughter behind. Seven years later, he retired and returned home, only to find that his wife Su Lian'er was running a street stall to support the family and had suffered endless bullying, while his daughter Lin Nian was also mocked. Liu Jian, a wicked young master in Jiangcheng, used his power to harass Su Lian'er. Lin Chen stepped in to punish him, but this drew retaliation from the Liu family. To keep his family safe, Lin Chen arranged for Su Lian'er to join Shengshi Group, but unexpectedly Liu Jian and his girlfriend Yang Ruoxue bullied her at work. Enraged, Lin Chen began his revenge, while also discovering that the Hidden Dragon had been corrupted from within by traitors. Lin Chen recalled his old brothers, eliminated the traitors, and finally killed Qin Tianhu at the Hidden Dragon headquarters, rebuilding the Hidden Dragon.