Two grocery store clerks find themselves in the midst of a mysterious invasion of yellow crawling brains that contaminate the population and turn them into zombies.

Following an unforeseeable tragedy, the inhabitants of the small community of Lac Sabin have to learn to survive, cope, and rebuild their lives.

Isolated in a country house, Simon questions his mother’s authority and resists bounderies. His behaviour influences his younger brother Colin, a sensible boy who is desperately seeking for a male role model. Colin will develop a perilous plan to try to stop Simon from running away.

Jon, a clerk working in a convenience store on a desolate highway, is visited by strange creatures that rob his store. While going after the creatures, Jon is drawn deeper and deeper in their universe.

An epidemic of yellow crawling brains threatens the lives of inhabitants in a reclusive Northern Quebec town.