Captain Craig MacKenzie (Christian Slater) and his comrade Mike were once experienced and powerful special forces soldiers in the Middle East battlefield, but in an operation, they disobeyed the retreat order of their superiors and attacked CIA agents, and were eventually kicked out by the army. Now they are struggling to survive and are decadent. At this time, a woman named Ruth found Craig and invited him to join a mercenary army. It turned out that there was a small island called Snake Island in the waters near Eastern Europe. No one knew its true ownership, but not long ago, the evil Colonel Lubo (Gennadi Vengerov) occupied the island, and his men raised a group of money-hungry and bloodthirsty villains. This group of demons arbitrarily seized the resources of the island, killed innocent people indiscriminately, and did all kinds of evil. To this end, several wealthy people invested in the purchase of arms and hired mercenaries to land on Snake Island to overthrow Lubo's tyranny. Craig will embark on a bloody journey with a group of masters... This film is adapted from the American war game of the same name.