A teenager with no memory of his past finds himself among a group of boys living in a walled enclosure surrounded by a massive, ever-changing maze. As he struggles to adapt to their rules and society, he begins to uncover clues that may lead to escape and the truth behind their confinement.

Thomas and his fellow Gladers face their greatest challenge yet: searching for clues about the mysterious and powerful organization known as WCKD. Their journey takes them to the Scorch, a desolate landscape filled with unimaginable obstacles. Teaming up with resistance fighters, the Gladers take on WCKD’s vastly superior forces and uncover its shocking plans for them all.

On a road trip to drop her daughter Ruby off at college, Sarah's car breaks down in the middle of nowhere. A passing driver, Allie, offers a ride into town for help, and though hesitant, Sarah lets Ruby go while she waits for a tow truck. But when Sarah arrives at a nearby diner to meet them, Ruby is missing, and Allie claims they've never met.