It seemed like a simple enough idea at the time: Now that their arch enemy Doctor Doom had seemingly perished, the Fantastic Four would journey into his nation of Latveria, disassemble its war machine and set its oppressed citizens free. But what appeared a black and white situation quickly turns a murky shade of gray, and Reed Richards and his family find themselves besieged on all sides, both by those they thought of as their allies, and by the very people they were trying to save! Collects Fantastic Four #503-508.
— Description from Comic Vine community (comicvine.gamespot.com).
