Mira needs to get home for the holidays. Badly. But when an incoming blizzard results in a canceled layover, it looks like Mira might get stuck at the Philadelphia airport indefinitely.

And then Harper, Mira's glamorous seatmate from her initial flight, comes to the rescue. Harper and her three friends are renting a car, and they can drop Mira off on the way home. But as their trip begins, Mira discovers her fellow travelers aren't friends like she thought they're total strangers. And every one of them seems to be hiding something dangerous.

Soon, Mira is in a panic. The roads have gone from slippery to terrifying. People's belongings are mysteriously disappearing. Someone in the car is clearly lying...and Mira beings to suspect that one of them is sabotaging the trip. If she wants to make it home alive, she'll need to uncover the truth about these strangers before this nightmare drive turns fatal.