Captain America: The First Avenger

In the present day, scientists in the Arctic uncover a circular object with a red, white and blue motif.

In March 1942, Nazi officer Johann Schmidt and his men invade Tønsberg, Norway, to steal a mysterious tesseract possessing untold powers. In New York City, Steve Rogers is rejected for World War II military duty due to various health and physical issues. While attending an exhibition of future technologies with his friend Bucky Barnes, Rogers again attempts to enlist. Having overheard Rogers' conversation with Barnes about wanting to help in the war, Dr. Abraham Erskine allows Rogers to enlist. He is recruited as part of a "super-soldier" experiment under Erskine, Colonel Chester Phillips, and British agent Peggy Carter. Phillips is unconvinced of Erskine's claims that Rogers is the right person for the procedure but relents after seeing Rogers commit an act of self-sacrificing bravery. The night before the treatment, Erskine reveals to Rogers that Schmidt underwent an imperfect version of the treatment, and suffered side-effects.

In Europe, Schmidt and Dr. Arnim Zola successfully harness the energies of the tesseract, intending to use the power to fuel Zola's inventions. Schmidt, having discovered Erskine's location, dispatches an assassin to kill him. In America, Erskine subjects Rogers to the super-soldier treatment, injecting him with a special serum and dosing him with "vita-rays". After Rogers emerges from the experiment taller and muscular, one of the attendees kills Erskine, revealing himself as Schmidt's assassin, Heinz Kruger. Rogers pursues and captures Kruger but the assassin commits suicide via cyanide capsule before he can be interrogated.

With Erskine dead and the super-soldier formula lost, U.S. Senator Brandt has Rogers tour the nation in a colorful costume as "Captain America" to promote war bonds rather than allow scientists to study him and attempt to rediscover Erskine's formula. In Italy 1943, while on tour performing for active servicemen, Rogers learns that Barnes' unit was lost in battle against Schmidt's forces. Refusing to believe that Barnes is dead, Rogers mounts a solo rescue attempt with Carter and Howard Stark flying him behind enemy lines. Rogers infiltrates the fortress belonging to Schmidt's HYDRA organization, freeing Barnes and the other captured soldiers. Rogers confronts Schmidt who reveals his face to be a mask, removing it to display the red, skull-like face that earned him the sobriquet, the Red Skull. Schmidt escapes and Rogers returns to base with the freed soldiers.

Rogers recruits Barnes, Dum Dum Dugan, Gabe Jones, Jim Morita, James Montgomery Falsworth, and Jacques Dernier to attack the other known HYDRA bases. Stark outfits Rogers with advanced equipment, in particular a circular shield made of vibranium, a rare, nigh-indestructible metal. Rogers and his team successfully sabotage various HYDRA operations. The team later assaults a train carrying Zola. Zola is captured, but Barnes falls off the train to his apparent death. Using information extracted from Zola, the final HYDRA stronghold is located and Rogers leads an attack to stop Schmidt from using WMDs on American cities. Rogers clambers aboard Schmidt's aircraft as it takes off. During the subsequent fight, the tesseract's container is damaged. Schmidt physically handles the tesseract, causing him to dissolve in a bright light. The tesseract falls to the floor, burning through the plane and falling to Earth. Seeing no way to safely land the plane without risking its weapons detonating, Rogers crashes it in the Arctic. Stark later recovers the tesseract from the ocean floor, but is unable to locate Rogers or the aircraft.

Rogers awakens in a 1940s-style hospital room. Deducing that something is wrong due to an anachronistic radio broadcast, he flees outside into what is revealed to be present-day Times Square. There Nick Fury informs him he has been "asleep" for nearly 70 years.

In a post-credits scene, Fury approaches Rogers, proposing a mission with worldwide ramifications

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