Who would have thought that they were siding with the evil Wardens? Calvin and friends have been played and fooled by Kalo and Tera. It turned out that the Warden siblings were not the victims at all but were the ones seeking the ruins of humans and other creatures. Kalo and Tera were now on the loose wreaking havoc in the Overworld and they have teamed up with an enemy from Calvin’s and Johansson’s past. It’s up to Calvin and the rest of the gang to stop the Warden siblings and their ally and prevent them from doing further harm to others.