Krull ja näkymätön vihollinen was released in the year 1983。Krull ja näkymätön vihollinen is also called as Krull, The Dungeons of Krull, Krull: Invaders of the Black Fortress, Dungeons and Dragons, Dragons of Krull。
From the sky will come the Black Fortress. From the Fortress will come the Slayers to devour the planet of Krull. Then shall a girl of ancient name become queen...she shall choose a king...and together they shall rule the planet. And their son shall rule the galaxy.