Mysterious Wakanda. It lies in the heart of Africa, unknown to most of the world. An isolated land hidden behind closed borders, fiercely protected by its young king - the Black Panther. But when brutal alien invaders attack, that leaves the Black Panther no option but to go against the sacred decrees of his people and ask for help from outsiders. And so he turns to the Avengers... Captain America, Iron Man, Thor, Giant Man, Wasp, Black Widow and the Incredible Hulk. These mightiest of heroes have battled the aliens before, and barely survived. They thought it was over. They were wrong.