It all started in a secret military base called 'Facility', when Koshan, a humble trainee, was killed by the central committee, without providing him any fair trial. A chilly gust of revenge swept Koshan's friends hard, and they decided to commit an upheaval against the central committee as they'd had to suffer those meaningless murders of the committee for countless times. The place they lived in, was a mysterious place where no sunlight or even moonlight could reach. For some obscured reasons, they were never allowed to go outside of the 'Facility', let alone have a family and settle down,...