As the Stone family reels in the aftermath of a devastating shooting, they're hit with their most foreboding calling yet; The Major attempts to tighten her grip on the unwitting Saanvi.
Ben forms a cautious alliance with a student from Flight 828; Saanvi strives to further her research into the Death Date; Grace makes a startling discovery about her pregnancy.
The Stone family struggles to unlock their mysterious wave of frightening 828 callings, while the person who may be key to solving them is behind bars; A shocking and disturbing incident leads Grace to suspect a local mom is in danger.
Michaela is pushed into the midst of a high-stakes bank robbery perpetrated by a mystery assailant; Ben and TJ piece together an arcane set of mythological clues; Adrian draws Olive further into the world of the Believers
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; Zeke tries to make amends with someone from his past.
Ben and Saanvi orchestrate a surprising family reunion for an emotionally closed-off Flight 828 passenger; Jared learns more about a growing cabal of anti-828 sentiment; Zeke's past threatens to destroy his new life.
Tensions flare as the passengers of Flight 828 finally come to understand the meaning of their increasingly terrifying callings; Ben confronts Adrian; Zeke challenges Michaela's trust.
In the wake of a devastating tragedy, Ben tries to connect with a despondent Olive; Michaela questions Jared's loyalties; Saanvi shares a medical breakthrough that could change the course of all their lives.
As a storm rages outside the Stone home and anxieties boil over inside, Olive frantically searches for meaning in a centuries-old text; Michaela faces unexpected scrutiny at work; Saanvi's lab research takes a dangerous turn.
When Grace's pregnancy complicates the pursuit of a calling, Ben finds himself working alongside an uneasy new ally. Michaela tries to make amends with Jared, and the X'ers set their sights on Zeke.
As the clock ticks towards his death date, Zeke 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.
Ben helps absolve a passenger of his guilt; Saanvi enlists help in protecting herself from the Major; Jared and Drea attempt to extract a confession from a trio of ruthless meth dealers who would do anything to exact revenge on Michaela.
Michaela and Ben put everything on the line to attempt a daring rescue; As the final hours of Zeke's life approach, Saanvi and Vance make a last-ditch effort to appeal to the Major, who may be the only person who can save him.