Shea and LeBlanc head to Dartmouth to investigate NEXT's whereabouts, which are potentially linked to Biomotion Labs. There, they visit LeBlanc's friend, Professor Richard Pearish for answers. Meanwhile, Shea, Ethan and Ty take extra precautions to disconnect from electronics and the Internet, and LeBlanc urges Abby to do so, as well, but NEXT complicates their plans.

Shea and LeBlanc steal an important hard drive and enlist Ben, Gina and C.M. to help decrypt it, as NEXT creates chaos to stunt their progress. C.M.'s past resurfaces as NEXT targets the FBI building with a dangerous ploy. Meanwhile, Ted and his Zava team buckle down on their search for NEXT, Ty and Ethan hide out in a remote cabin and LeBlanc discovers new information on his health that may affect Abby.

NEXT orchestrates an unlikely and dangerous reunion between Shea and someone from her past when she goes to check on Ty and Ethan. Ted is in trouble with Zava and figures out a way to remain in the company. Meanwhile, LeBlanc gets honest with Abby and C.M.'s life is threatened.

Shea manages to save Ethan from extreme danger, while Ty makes a difficult decision for his family's safety. Then, LeBlanc takes matters into his own hands to remedy his degenerative brain disease. Also, C.M. and Gina escape the hospital and learn more about each other, Ted makes a risky deal to take over a server farm in Singapore and he uses Abby to access LeBlanc's NEXT hard drive.

LeBlanc and Shea discover Ted's plan for the NEXT server and race to intervene before it is too late. Meanwhile, Ben and Gina investigate NEXT's latest victims, Congresswoman Elenor Beatty and reporter Harrison Cole, after a freak accident occurs, and Shea reaches her breaking point.

NEXT manipulates a GPS system and causes an elderly couple to crash, while it also generates power outages all over the country. LeBlanc decides to plant a virus on the NEXT server, but must break into ZAVA in order to do it. Meanwhile, Shea and Ty have opposing ideas on how they should protect their family and Ben faces a conflict with his father.

NeXt targets Congresswoman Beatty again when Agent Shea Salazar seeks her help to stop it. Shea discovers a leak within her team, as Gina encounters trouble while trying to code the virus into an NSA server.

NeXt taunts LeBlanc with a new tactic relating to his illness and Shea and LeBlanc devise one last dangerous ploy to destroy neXt, and save their lives, their families and the world.