A week after finding the amnesiac Zweihander, Subject 1369 introduces him to Doctor Corban Dade, a.k.a. Indigo. During this introduction the three are alerted to a bank robbery run by a rejected super hero known as The Human Camel. While dispatching the Camel and his henchmen, one of the hostages at the bank transforms into a large demon and flies away after being attacked. Subject 1369 follows the demon and sees him disappear into the abandoned Aperture Science Enrichment Center.