Gen. Douglas MacArthur (guest-star); Gen. Yokima (villain, introduction, death); Captain America [Steve Rogers]; Bucky Barnes; Wang; Tein Lin
The Japanese attempt to invade America by building a tunnel from Mt. Fuji to the Marcus Islands and using the power of the volcano to move the troop transports. When Cap and Bucky beat the details out of the officers, they head for a seaplane in Tokyo harbor to fly to the Marcus Islands before the troop transports get there. They place explosives at that end of the tunnel and the transports are destroyed.