A talented actor in need of money moonlights as a collector on the phone, intimidating customers severely. One day, working as a Santa Claus after work, he finds himself on the other side of the collectors' line.
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.
