In the universe of Terraria, a catastrophic event draws near. An ambitious tyrant takes advantage, becoming a new threat to the lands and skies and star systems that everyone thought were finally safe from the ancient evils. Weary and gravely few in number, the dying race of Terrarians rise up one last time, along with the warriors from this age and long ago... Be prepared, for when the Bells of Calamity sound, the world will not be.