An exec from a rival company covertly offers valuable secrets, so Ben, Elizabeth, and Julian plan a defection. Laura responds to a domestic betrayal. In the past, Aaron and Elena meet again.

After his strategy misfires, Ben's backup plan risks his life and Elena's rescue. Laura bypasses company policy to save a cardiac patient. Julian accepts Ben's help to investigate a murder.

Ben's ongoing investigation leads to a shock. Laura's child patient reveals sobering facts about life outside the wall. Elizabeth and Julian finally enact their bold plan against Inazagi.

Ben's mission reaches a critical juncture, Laura finds the thief, Theo ventures inside the wall, Elizabeth and Laura reckon with the fate of the clinic, and Julian tracks a killer.