When a new type of infectious disease spreads in a high-rise apartment building, the tenants are separated from the rest of the world. The befuddled, isolated and afraid residents' only hope of survival is in their own hands.

When a new type of infectious disease spreads in a high-rise apartment building, the tenants are separated from the rest of the world. The befuddled, isolated and afraid residents' only hope of survival is in their own hands.