Day one
Malorie is pregnant and not sure she wants to be a mother. Her sister Jessica takes her to a checkup. At the hospital, a woman bashes her head against the glass until she dies, and panic sweeps the city. On the way home, Jessica sees something, crashes the car and steps in front of a truck.
Alone in the street, Malorie watches people killing themselves around her. A woman tries to help and dies in a burning car. Tom, a stranger, pulls her into a house full of strangers, where she spends her first sleepless night.