Sam Nelson gets on a flight to London hoping to win back his ex-wife, but something on board feels wrong-and his suspicions are confirmed.

Spotting an opportunity, Sam executes a plan to get a covert message to authorities on the ground.

As the UK's counterterrorism unit learns of Flight KA29, Sam gets involved in a risky plan to take on the hijackers.

An incident team in Westminster scrambles to intercept fighter jets. Sam tries contacting the ground once more when a hijacker is injured.

Sam attempts to convince the hijackers to land the plane. A list of demands reveals who's behind the hijacking.

Faced with an impossible decision, the passengers ready themselves for a fight.

A new threat emerges on board as Sam struggles to control the chaos unfolding around him.