Captain America: The First Avenger Synopsis

"Captain America: The First Avenger" will focus on the early days of the Marvel Universe when Steve Rogers (Chris Evans) volunteers to participate in an experimental program that turns him into the Super Soldier known as Captain America. As Captain America, Rogers joins forces with Bucky Barnes (Sebastian Stan) and Peggy Carter (Hayley Atwell) to wage war on the evil HYDRA organization, led by the villainous Red Skull (Hugo Weaving.) (Source)

Steve Rogers volunteers to participate in an experimental program that turns him into the Super Soldier known as Captain America (Source)

Marvel Studios brings their prodigious patriot to the big screen with this WWII-set adventure about a once-meek U.S. soldier-turned-hero (Chris Evans) who gains strength and agility far beyond that of a normal human being after taking an experimental super-serum. The Wolfmans Joe Johnston directs from a script by Chronicles of Narnia screenwriters Christopher Markus and Stephen McFeely. Hugo Weaving co-stars as the dreaded Red Skull, with Tommy Lee Jones, Toby Jones, Sebastian Stan, and Hayley Atwell rounding out the cast. - Jeremy Wheeler, Rovi (Source)