Watch Iron Fist Adventure for Free: How to Stream the Movie Online at 123Movies. . An action-packed, flamboyant kung-fu adventure, based around a double revenge tale. The hero Kwan, stoic in the face of extremes, grits and airs his 'iron-fist' against the gun-toting baddies as he, single-handedly, decimates his adversaries. Demonstrating all the classic Chinese codes of restraint, asceticism and patience, Kwan reduces the complicated intrigue of plots.