The team finds an abandoned Air Force base and discovers what looks like alien technology.

More people flock to Murphy's new cult, while the others are stuck in the middle of a war.

The team is captured by an Unseen Force and enslaved in an elaborate underground facility, forced by their mysterious captors to perform a series of bizarre, dangerous tasks.

With some help from an outpost of renegade hackers, Warren and George hack Altura's defenses and discover Estes' secret plan.