As this cursed Vietnam War is nearing its end, the G.I.s still there are very happy to finally be able to return home, even if the conflict is lost. However, the American high command sends them on an uneventful escort mission to protect scientists who intend to explore an old abandoned castle in Transylvania. Understanding that it is to protect them in case the militia of the Romanian dictatorship find them, the soldiers go there with a light heart, thinking that they will soon see America again. However, near the castle and its underground cave network, once night falls, a horror worse than war will come for all of them. Everyone will understand that some legends are based on real facts... and that monsters exist !
