When Flight 828 lands in New York, Michaela and Ben Stone and the other passengers learn that years have passed, but they haven't aged a day. They reunite with loved ones, piece together their old lives and deal with mysterious voices in their heads.

The passengers from Flight 828 find themselves under government scrutiny as they struggle to resume their lives. Michaela is forced to confront the fact that Jared is married to her once-best friend, while Ben tries to help a fellow passenger reconnect with his son. Cal is approached by an obsessive stranger, as Grace and Olive disagree on whether or not to reveal a devastating secret.

Ben and Michaela investigate a shocking murder in fear that it's connected to Flight 828. Meanwhile, Ben struggles to accept the life Grace led in his absence, while Olive and Cal realize that being twins after five and a half years apart is harder than they thought.

Michaela and Saanvi have a similar vision, but it takes them some trial, error and teamwork to heed the call; Jared takes the fall for Michaela's misstep at work; Ben comes face-to-face with the man who replaced him.

Flashbacks reveal how Grace, Olive and Jared coped with the loss of their loved ones after the disappearance of Flight 828; Ben tries to escape the voice in his mind by going on an adventure with Cal; Michaela struggles with her feelings for Jared.

When Cal wakes with a life-threatening fever, Grace worries it's a side-effect of his experimental cancer treatment, but Michaela and Ben suspect Cal's condition may be related to a mysterious passenger from Flight 828. As Cal's situation worsens, Ben and Michaela attempt to track down the now-missing passenger.

With the detained passengers secretly moved and subjected to painful experimentation - and Cal's health directly linked to them - Ben takes advantage of an old friend to find out where the passengers were taken. Meanwhile, a mysterious new version of the calling pulls Michaela into a murder investigation that has deep personal ramifications for her.

Ben forms an unlikely partnership with Vance in a high-stakes race to locate the missing passengers of Flight 828. Meanwhile, Michaela helps a suicidal passenger who believes he is the Angel of Death, and Cal goes back to school, navigating both his unwanted celebrity and his former friends, who are all now 16 years old.

When Ben and Michaela put everything on the line to save the other missing passengers, the mission goes horribly awry and not everyone makes it out alive. The devastating result pushes Ben and Grace to a traumatic brink, while pulling Michaela and Jared dangerously close together.

Michaela's mystifying, next-level calling launches her on a mission that brings her relationship with Jared to a head. Determined to protect his family, Ben explores an alternate meaning to Michaela's calling that leads him to a new alliance and a powerful new adversary. Cal's struggle with Ben's absence from home forces the Stones into an agonizing confrontation that could alter the family's fabric forever.

Willing to follow any lead to keep his son safe from The Major, Ben heeds Cal's calling to help Captain Daly clear his name for what happened to Flight 828. The journey uncovers a seeming conspiracy that stems all the way back to the day the plane disappeared. Meanwhile, Michaela assists Autumn in her own journey of redemption.

When Cal is discovered missing from his bedroom, Grace and Ben launch a desperate search which takes them to the remote mountains of upstate New York. A tantalizing trail of breadcrumbs leads them to a startling, game-changing discovery. Meanwhile, Michaela confronts the deceptive Autumn, and the shadowy "Major" finally makes an appearance.

Michaela uses her skills as a detective to find out more about Zeke, a hiker who disappeared in 2017 and may be one of them. Ben's family is impacted as public disdain for the passengers of Flight 828 rises.

When Saanvi goes missing, Ben suspects a fanatical group who have become obsessed with the passengers from Flight 828. Michaela must face the consequences of her reunion with Jared. Zeke returns to New York and has an ominous calling.

Another non-passenger appears to have come back from the dead, and Ben, Michaela and Saanvi want to know why now and why him. This mystery-man is also having callings. Saanvi experiences PTSD.

Michaela, Ben, Zeke and Saanvi all have the same calling. After another panic attack, Saanvi is finally ready to see a therapist, but it may not be what's best for her. An ominous new link appears between Griffin and the 828 passengers.

As the Stone family reels in the aftermath of a devastating shooting, they’re hit with their most foreboding Calling yet, sending Ben on a mission to locate two Flight 828 passengers who have mysteriously gone missing. Grace grapples with her new pregnancy, the Major attempts to tighten her grip on the unwitting Saanvi, all while the clock on the lives of the 828ers continues to tick towards zero.

Ben forms an alliance with a student from Flight 828, whose callings either uncovered a violent crime or helped him commit one. As 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 trapped behind bars. Meanwhile, 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. As 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, 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.

Ben and Saanvi work together to orchestrate a surprising family reunion for an emotionally closed-off Flight 828 passenger. Meanwhile, Olive drifts further away from her family, Jared learns more about a growing cabal of anti-828 sentiment, and Michaela finds herself out on a limb when baggage from Zeke's past threatens to destroy his tenuous new life.

Tensions flare as the passengers of Flight 828 finally come to understand the meaning of their increasingly terrifying callings. Afraid of losing his daughter to the Church of the Believers, Ben confronts Adrian. Zeke challenges Michaela's trust, and Saanvi seeks help from an old flame.

In the wake of a devastating tragedy, Ben tries to connect with a despondent Olive. Michaela questions Jared's loyalties, and 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. Meanwhile, Michaela faces unexpected scrutiny at work, and Zeke comes to Saanvi's aid when her 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 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 is drawn to help absolve a passenger of his guilt, while 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 from his Death Date. Season finale.