A routine flight takeoff is interrupted by an anxious passenger, a woman who knows more than she’s saying, and a distant scream on the other end of the phone

As the plane takes off, Jake tries desperately to text his mother, while Marcus vomits into a bag as his wife tries to comfort him

The flight attendants begin to serve drinks throughout the cabin, and Jake has a short discussion with Connie about how he ended up on the plane without his mother

Marcus starts to feel sick and urgently has to use the lavatory. His wife claims, he suffers from reflux

The passengers are asked to prepare for the descent to Phoenix. As Marcus is still in the bathroom, the flight attendants urge him to come out

As a blackout continues to roll across Phoenix, Alex urges Deirdre not to open the door. Suddenly, the bathroom door opens and Marcus falls out, unconscious

The passengers learn what they're up against as the plane re-routes from Phoenix to Los Angeles

Anthony, an U.S. Air Marshal demands that all the passengers return to their seats, despite Alex's warning that Marcus is now dangerous

Marcus has turned into a walker and after a struggle the group shoves him back into the bathroom. Once he is secured they notice blood on themselves and determine that Deirdre was scratched on the arm

Alex tells Anthony to secure Deirdre since she has been bit and will turn like Marcus. Alex tries to convince the Captain to land the plane, but all the cities are experiencing power loss

Suzanne mourns the loss of her husband from outside the compartment door where he is held while he continues to bang on the door from the other side. Anthony tends to Deirdre's bite wound

When Suzanne's husband stops banging on the door, she fears that it is a sign he is dying. She then unlocks the cabin bathroom door releasing him into the isle where all chaos breaks loose

With Marcus on the loose, Jake finds a knitting needle and hands it to Alex who takes care of the situation. Once it's done, the group notices a crack has formed in one of the plane's windows and it's starting to spread

Suzanne who has been bitten is comforted by Deirdre while Alex takes matters into her own hands concerning how to deal with the bite wound. The window which has been slowly cracking finally completely shatters

As the airplane cabin depressurized, the passengers struggle to find available seats and strap on oxygen masks. Alex and Jake buckle in next to each other and she makes a startling revelation to him

As Nick is scoping out houses to break into, he looks up to see Flight 462 teetering back and forth as it approaches LAX

A fearsome survivor agrees to help an injured woman in exchange for apocalyptic sanctuary

The story revolves around Althea Szewczyk-Przygocki, who interviews various survivors. Ed, who narrowly escaped death, tries to return home to Oregon and agrees to tell his own story if he is transported to Texas. Meanwhile, Althea is convinced that her videos are of benefit to the survivors and hopes for a better future

The USS Pennsylvania runs weapons drills during peacetime in the Gulf of Mexico

A man dies; something bad is going on

Penetrating the skull is the only way to stop the enemy

Advancing quickly; sticking together; firing is not allowed unless absolutely necessary

Riley does what needs doing

The new mission is to survive