In 1960, four American scientists travel to a planet that has just entered Earth's solar system to see if it's able to support an Earth colony. They find an oxygen atmosphere, a lush earth-like forest, and earth-like animals living around a potable fresh-water lake.
Based on Finnish mythology; Lemminkäinen woos the fair Annikki and battles the evil witch Louhi. Louhi kidnaps Annikki to compel her brother to build for her a Sampo, a magical device that creates salt, grain, and gold. When Lemminkäinen fails to recover the Sampo, Louhi steals the sun, plunging the world into frozen darkness.