The Avengers have always been Marvel's premiere super hero team, made up of all of the heavy hitters that the House of Ideas has to offer. But what happens when a team of this stature is squarely defeated—and on their home turf to boot?Avengers: Under Siege collects the classic storyline in which the Avengers are finally bested by their villainous archenemies, the Masters of Evil. Even worse, their base of operations—the Avengers Mansion—is intentionally destroyed in the process. Can even the Earth's Mightiest Heroes rebound from this debilitating defeat? Collects Avengers (1963-1996 1st Series) #270-271 and 273-277