When Grace and Cal are involved in a suspicious hit-and-run, Ben is determined to get to the bottom of it. Michaela investigates a brutal attack at the Church of the Believers, but finds her efforts stymied by Adrian's refusal to cooperate. Zeke is tested when he tries to make amends with someone from his past.

As Zeke's condition worsens and the clock ticks towards his Death Date, he must confront his past while Saanvi tries to secure him a future. A pair of connected callings lead Ben and TJ to a surprising loved one, and Michaela faces a moral dilemma when her own calling instructs her to let a criminal go free.

Ben and Saanvi join forces with Vance in his newest venture to understand Flight 828. Michaela and Zeke adjust to their new home life together, but they pivot to aid a non-passenger with a looming death date of their own.

As Mick and Ben join forces to aid a desperate Flight 828 passenger, Saanvi grapples with a discovery at Eureka, and the burden of secrecy that comes with it. Grace and Angelina's bond deepens. A maturing Cal enlists Zeke's help in a personal matter.

The Stones are reunited with Olive, yet their happiness is quickly interrupted when Cal runs away. As Michaela struggles to help the passengers avoid a deadly threat, her relationship with Jared sours over mistrust.