When a peaceful settlement on the edge of a distant moon finds itself threatened by the armies of a tyrannical ruling force, a mysterious stranger living among its villagers becomes their best hope for survival.

A mysterious force knocks the moon from its orbit and sends it hurtling on a collision course toward earth.

A follow-up to the film Iron Sky (2012) in which Nazis plan to take over the world after lying dormant in a secret military base on the moon.