Absorbing the nanites from cured Evos takes its toll on Rex, and he is taken to a remote Providence base in the Arctic codenamed "Paradise" to have the excess nanites extracted and stored. The base commander Weaver is upset about the unscheduled visi... (more)t, and his personnel are uncooperative. Dr. Holiday has to threaten them to have Rex treated. Rex is sedated for the procedure; after having an odd dream, he wakes up to find the base personnel unconscious (possibly dead), Six, Holiday, and Bobo missing, and the Pack members Biowulf and Skalamander arriving at the base outside. After burying them in an avalanche, Rex goes back inside to find Weaver, who attempts to render him unconscious. Rex learns that Weaver has been reactivating the extracted nanites and selling them to Van Kleiss. When Rex unexpectedly showed up earlier, Weaver had panicked. Rex finds Six, Holiday, and Bobo locked up in a storeroom, when Biowulf and Skalamander enters the base. Weaver escapes his grasp and demands safe passage, backed with the threat to open the tank containing the extracted nanites. While trying to make it look realistic, Weaver accidentally triggers the release and mutates into a gigantic tentacled E.V.O. with regenerative powers. Biowulf and Skalamander flee, while Rex and Six fight Weaver. Holiday and Bobo try to launch their air transport before it falls into a trench in the ice opening under the collapsing base. Rex tries to cure Weaver, but passes out from absorbing too many nanites, though not until after he experiences more jumbled memories and taps into nanite communications frequencies. Weaver is taken down by Agent Six and the air transport that Dr. Holiday and Bobo are on. He wakes up in "Purgatory," a Providence base in a desert, a backup for the Arctic base, with no memory of hearing the nanites. As Bobo and Rex wander out onto the sand, Dr. Holiday tells Six about a odd nanite code (it is shown as a binary code on the computer screen) that had appeared after she extr