Plot
Loki, having been previously captured by Thor, is being held prisoner at the Isle of Silence in Asgard. His physical form may be confined there, but by means of thought projection his disembodied self travels to Earth in search of revenge. He spots Thor in his human identity of Dr. Don Blake, but resists defeating him as it would be a hollow victory compared to defeating him as Thor. After hours of searching, Loki happens across the Hulk and devises a wicked plan to entice Blake to transform into Thor. He projects a mental image of dynamite on the tracks of a nearby railway bridge. The Hulk spots the dynamite and attempts to snuff it out, accidentally destroying the bridge. Suddenly, a train appears on the tracks traveling towards the wreckage. Valiantly, the Hulk manages to hold the tracks up long enough for the train to pass safely before allowing it to collapse. Unfortunately the damage has already been done and Loki's plan was successful.