Seven years after the world has become a frozen wasteland, the remnants of humanity inhabit a perpetually-moving train that circles the globe, where class warfare, social injustice and the politics of survival play out.

Claudia, 22, gets busted for credit card fraud and deported from USA to Mexico. She returns to her estranged dad's ranch. She's a pocha - can't speak Spanish. She gets involved with a drug smuggler.

Deals with 90 minutes in a kidnapped hostage's life, and the frustration his family, a special ops team, and a man in charge of delivering the ransom money all feel as they rush to save him.