Gravity

Dr. Holiday and small group of Providence scientists are on board a satelite station working on a modified form of nanites that deactivate regular nanites. The test run is a success until ZAG-RS, the rogue AI system from the village of engineers from The Architect, hacks into the satelite to steal the deactivated nanite research. Holiday manages to shut down the satellites' systems thus preventing the download and trapping ZAG-RS but causes the satelite to enter orbital decay. Rex arrives to help using the Space Elevator but the damage done to the elevator destroys it. With the assistance of a drone named Salvator, Rex is able to stabilize the station with an escape pod with Rex, the surviving crew and nanites on board. However, it is eventually revealed that ZAG-RS downloaded herself into Salvator to avoid the effect of the shut down and now intends to leave everyone else on the satellite while she escapes to earth in Salvator with the nanites and the research. However, Rex and Dr. Holiday are able to defeat ZAG-RS by both destabilizing the station and sacrificing the nanites. The episode ends with a crew member, Dr. Holiday, and Rex in an escape pod in the middle of the ocean awaiting pickup.