After a classical ET-lookalike's baby-version (called Extraterrestrial Biological Entity, EBE) is hit by a prison transport which, in turn, crashes near Rosswell and a nearby poisonous bio-hazard. Frank is sent there on a mission so secret Isaac can't even brief him in advance. Frank has to find out on the job.

An alien survivor of the Roswell crash, nick named "Adam", who was kept on life support for decades, suddenly awakens and wreaks havoc.