Set more than seven years after the world has become a frozen wasteland, the remnants of humanity inhabit a gigantic, perpetually-moving train that circles the globe as class warfare, social injustice and the politics of survival play out.

Maddie is a teenage girl dealing with addiction who has a reputation as a party girl who doesn’t think she has a problem, until she’s confronted one day by her school guidance counselor and is forced to choose between expulsion and rehab. Maddie makes the difficult decision to live with other recovering addicts at a sober living facility while facing the daily pressures of her teenage life. Based on the popular young adult novel by Blake Nelson.

When she’s deported to México, Claudia must choose between reconciling with her estranged father or partnering with a dangerous smuggler to return to the U.S.