In the wake of Avengers disassembled, a mysterious, new group of teen super heroes appears with powers and names resembling classic Avengers Captain America, Iron Man, Thor and the Hulk. But who are they? Where did they come from? And what right do they have to call themselves the Young Avengers? When the Young Avengers' public actions draw the attention of Captain America and Iron Man, the old Avengers set out to learn the truth about their teenaged namesakes. Caught between a maniacal super-villain and their heroic idols, will the Young Avengers' first fight be their last stand?