Captain America isn't just a super hero. He is the world's premier soldier and has fought bravely in defense of his country and its people. Now, however, the Sentinel of Liberty has met his match in the devious Red Skull - and what's more, this new villain claims to be Cap's son. In a bid to learn the truth behind the Red Skull, Captain America goes rogue; he'll stop at nothing to get the real story. There are some tales the government doesn't want told, however, and S.H.I.E.L.D. commissions a new group of Avengers to subdue Captain America and bring him in. But can even the assembled might of Nick Fury, Hawkeye, War Machine, Red Wasp, the new Black Widow and Nerd Hulk hope to keep Cap from his mission? Collecting ULTIMATE AVENGERS #1-6.