While playing host to the Fantastic Four at Avengers Mansion, the Avengers find themselves under attack by Doctor Doom's forces.

Seeking revenge against Tony Stark, the leader of AIM seizes control of Stark Enterprises' corporate tower.

The Enchantress is on a vindictive hunt for Baron von Zemo and he appeals to the Avengers for help against her.

Ronan the Accuser of the Kree Empire arrives at Earth with Captain Mar-Vel in tow to pass judgment on whether the planet should be annexed or destroyed.

When Henry Pym discovers that his Ant-Man equipment has been stolen and being used by a criminal, he hires Heroes for Hire to recover it.

The Avengers receive a man who appears to have been experimented on by aliens, and now hunted by another extraterrestrial group.

Thor meets an alien trespasser whose hostility and monstrous appearance belie his unexpected worthiness to wield his hammer, Mjolnir.

Iron Man learns from Nick Fury that the Avengers has been infiltrated by a Skrull impostor and the team turns against each other.

Captain America and friends travel to Wakanda to repair his shield, unaware that a powerful android is hunting them to capture it among other objectives.

SHIELD is apparently attacked by the Hulk, but Banner is accounted for elsewhere at the same time while this Hulk is red in color.

A Skrull team posing as The Avengers invades Wakanda with only Ms. Marvel able to help the Black Panther.

The real Captain America and his fellow prisoners attempt to escape their Skrull prison.

The Skrull Empire initiates their seizure of Earth and the Avengers are hard pressed to thwart it.