 When exploring in the basements of the school, Archie ends up releasing Hope and the Seithr from Pandora s box. While attempting to get a sample of it so that Dionysius can work on a cure, Atlanta is infected, triggering one of the most bizarre set of symptoms ever, singing "Pop goes the weasel" and random destruction amongst them. While Archie waits impatiently for a cure, the rest of the team sets out to confront the Seithr, only to find out that its much trickier than it would seem. Soon two more of the titans have been infected, and it is only Archie s natural immunity to almost anything that can stand up against it. (A throwback to Achilles) When they finally return to get Herry and Odie cured, Atlanta is back to normal and completely oblivious to everything Archie said or did while she was sick, much to his relief and dismay.