The story involves a subversive, long-term invasion of Earth by the Skrulls, a group of alien shapeshifters who have secretly replaced many superheroes in the Marvel Universe with impostors over a period of years, prior to the overt invasion.
The story involves a subversive-term invasion of Earth by the Skrulls. This is long. The Skrulls are a group of alien shapeshifters. This group of alien shapeshifters have secretly replaced many superheroes in the Marvel Universe with impostors over a period of years, prior to the overt invasion.