1) John Jones is a former Navy SEAL on break when a zombie outbreak occurs, killing his wife and son. 2) He fights his way into New York City to find the National Guard, but they are overwhelmed, and he must escape the city with a group. 3) After weeks of fighting zombies and dangerous survivors, John makes it back to his home alone, where he is found by a group of Navy SEALs who have been sent to retrieve him, signaling that a safe zone has been established and they are fighting to retake the country.