Leah Watton's practical joke has spiralled way out of control-all to impress a crush... With a prank online video, Leah hopes to catch the attention of Jake Colton, a cute, blond-haired, blue-eyed co-worker she's had a crush on for months. But instead of sending it to Jake, she manages to forward the clip to her boss-who buys every gory second. When mass panic ensues, Leah learns the video is more than a staged act... The government is calling the virus AM13. As the outbreak spreads, citizens are forced to stay indoors while they assess the gravity of the illness. Most people are quarantined in their homes, but Leah, Jake, and Leah's best friend Michelle are some of the unlucky few who are stuck at work when the Lockdown occurs. That's where she first encounters one of the infected... Aside from a contaminated woman devouring one of her co-workers, Leah has another problem. Does she do as she's ordered and stay at work? Or should she disobey government orders and break free to reunite with her family? She can't go it alone-after all, Leah has none of the skills needed to survive-but with Michelle and Jake by her side, not even a contagious virus and a sea of the dead can keep her from... Breaking out of the Lockdown...