In WW2 the allied forces seek champions to defend against Hitler's sciense division- HYDRA. HYDRA leader Red Skull searches for a weapon of Asgardian lore.
Captain America is created by Project Rebirth (the weapons program) and eventually forms a team which includes his second in command Bucky, Human Torch, Toro, Union Jack, Spitfire, Miss America, Blazing Skull and Whizzer.
Namor joins the team when the war starts affecting Atlantis.
Wolverine cameos in one action sequence (pre-adamantium, with bone claws)
Bem Grimm cameos as a WW2 pilot.
Max Eisenhardt cameos as a child in a concentration camp, discovering his Magnetism powers and using them to kill his parents' killers.
Charles Xavier cameos as a child as well.
In the final battle Red Skull uses the Asgardian weapon to summon and control Thor to fight The Invaders.
Cap and Bucky both seemingly die.
END CREDIT SCENES: Cap discovered frozen under ice.
Ben Grimm returns to New York.
