Several decades ago, a highly infectious, constantly mutating micro-organism – capable of extinction-level destruction – was contained in a military facility. In the present day, the military has sealed the facility’s lowest sublevel selling the remaining space to a self-storage company. As temperatures rise underground, the micro-organism finds a way to escape – and if left to spread, it will soon uncontrollably multiply around the world. The fate of humanity now rests on a retired bioterror operative and two unlikely heroes employed in the facility – who are caught in a race against time to destroy the organism and save mankind.