Atomic Robo is on a train loaded with Nazi soldiers. His mission - to punch the living hell out of anyone who gets between him and German spy master, Otto Skorzeny! But is that what Otto was planning all along? Meanwhile, Britain's top covert agent, The Sparrow, must assassinate Dr. Vanadis Valkyrie before she can perfect her dreaded Wehrwolf Formula - but a certain atomic-powered robot ruins everything!