Between

A mysterious illness spreads through a town, killing all residents over the age of 21 while leaving children and teenagers unharmed, prompting questions about the cause and implications of the outbreak.

The surviving citizens gather the deceased to be burned, hoping the quarantine will soon be lifted.

A sudden and widespread power outage hits Pretty Lake, disrupting all forms of communication and leaving residents isolated.

A teacher becomes increasingly concerned that she might be infected with the virus, raising tensions among the staff. Meanwhile, Chuck enforces a strict and public disciplinary measure to maintain order.

With electricity restored, the remaining residents of Pretty Lake find themselves cut off from the outside world due to a communications blackout.

A government team arrives in Pretty Lake to distribute a potential cure, while Adam possesses critical information that could determine the outcome of the crisis.

With food supplies dwindling, Adam and Wiley make a bold move. Meanwhile, Chuck and Harrison join forces, Mark commits a costly error, Gord attempts to secure more resources, and Ronnie encounters a mysterious newcomer named Renee.

After his failed escape plan, Chuck returns to find that Wiley and Adam have brought in a scientist. Gord and Franny argue over resources. Ronnie helps Renee find her brother. Mark wants to confess to a killing.

Wiley seeks out food for Jason. Adam recruits Chuck to find out what Liam's real motives are. Ronnie brings Eric's body to Renee's compound.

Adam confronts Liam. Wiley and Liam must find someone about to turn 22 to see if the cure works. Franny, Harrison and Tracey discover Mark's secret. Ronnie and Renee fight over power.

Adam seeks out the truth of the government's plans for Pretty Lake. Wiley faces the aftermath of Renee's shooting and confronts Liam.

Wiley, Chuck and the rest of the kids race for to the extraction point.