At Quantico, the NATS are given a training exercise that hits too close to home for Shelby. While in the future, Alex finds an unlikely ally in Hannah, as she continues to try and stop the terrorist from striking again.
As Alan (Billy Campbell) risks killing Peter (Neil Napier) in a desperate effort to cure him, Walker (Kyra Zagorsky) teams with a mysterious young researcher to survive their quarantine. Jordan (Jordan Hayes) discovers her Rapid Response test is flawed.
Josh and Nora prepare for their second change together, Sally explores reincarnation, and Aidan dates a human while dealing with being cut off from his blood supply.
