The Brotherhood III: Young Demons

Every Friday night, a group of teenagers heavily into an Occult based wizard and warrior role-playing game, gather in ritualistic costumes--complete with real weaponry--to perform macabre, yet faux ceremonies. When they stumble upon a real ancient book of spells and carelessly chant a few passages, their fantasy world is transformed into frightening reality. A medieval land of horrors is unearthed before their eyes, and now the gamers must find the correct spells to send it back... before it's too late. (official distributor synopsis)