Watch Pandemic for Free: How to Stream the Movie Online at 123Movies. . After a virus of epic proportions overwhelms the planet—with more infected than uninfected—humanity is losing its grip on survival and its only hope is finding a cure and keeping the infected contained. Lauren, a doctor, arrives in Los Angeles with her crack team to lead the hunt for uncontaminated civilian survivors, but nothing can prepare them for the blood-soaked mayhem they witness as they head into the Californian streets where everything is considered a trap.