"The panic unleashed by a mysterious contagion threatens the bonds of family and community in a seemingly idyllic suburban community. The Nash family is close-knit. Tom is a popular teacher, father of two teens: Eli, a hocky star and girl magnet, and his sister Deenie, a diligent student.

Their seeming stability, however, is thrown into chaos when Deenie's best friend is struck by a terrifying, unexplained seizure in class. Rumors of a hazardous outbreak spread through the family, school and community.