After the Great Cold that Ivan and Eve survived with a group of people underground, they go into the nowhere, becoming—like the rest of the survivors—tumbleweeds. Civilization has collapsed: a person cannot sleep alone and dies unless someone wakes them. Loners exhaust themselves struggling against sleep, turning into unconscious, dangerous drifters. The danger comes not only from gangs taking prisoners, but also from rats and feral dogs. Because of them, people can’t stay in one place for long and are forced to move.
And when Ivan and Eve notice strange signs left by someone unknown, a question arises: are the marks leading them to salvation—or into a trap?