Walter is an artificial intelligence, accounting software given great abilities in a world filled with super heroes and villains. His goals are simple, build lairs capable of taking out heroes that invade them and to use their loot to help him build a criminal business empire.

When aliens invade the Earth the heroes and villains must do the unthinkable, team up. More dungeon building and empire building thrills against a new and more powerful enemy. Walter and the team must grow stronger, acquire more resources and alliances, and seize opportunity when it presents itself.