Out of the Mountains

Underground boxing champion Du Xiao offended wealthy young man Zhang Yuqi by refusing to fight fake matches. In revenge, Zhang kidnapped Du Xiao's father and wife, trapping them in a cage. Just when it seemed hopeless, Shanghai's true dragon Song Shihui stepped in to help. To everyone's shock, Du Xiao is actually Song Shihui's biological son! Together, mother and son take down the bully, expose the conspiracy of Japanese samurai, and save the national treasure.