Communist spies attempt to extort a man who works at the shipyard into turning over the plans for atomic powered vessels or else they will kill his blind son. Cap takes his place with an overcoat on to meet with the spies and they proclaim that now that they have the plans, they are going to kill him and his son both. They drive back to the man's apartment and go upstairs to bring down the boy who turns out to be Bucky in disguise. Cap and Bucky reveal themselves and are mopping up the spies when the blind boy comes out of the apartment attempting to help. Bucky tells him to get back, but one of the spies grabs him and threatens to shoot him. Cap deflects his aim, but the gun discharges near his head, restoring the boy's sight. Cap and Bucky hand over the spies to the police.