Gravitas Ventures has acquired all North American distribution rights on sci-fi thriller “Alien Invasion: S.U.M.1,” which stars “Game of Thrones” actor Iwan Rheon. Munich-based sales agent Global Screen is handling global rights.

The movie, which is produced by Christian Alvart (“Nick – Off Duty,” “Case 39,” “Pandorum,” “Antibodies”), has its theatrical roll-out set for Dec. 1, day and date in 10 markets. It premiered at the Shanghai Intl. Film Festival and also played at the Fantasia Intl. Film Festival.

The film centers on S.U.M.1, a committed young soldier who has lived his whole life underground. He enters a dark and desolate forest, his mission: to keep at bay the Nonesuch, a breed of hostile alien creatures. As reports circulate of frequent, devastating attacks, the routine military operation becomes a nightmare.

“We are thrilled to team up with Gravitas Ventures to bring this intensely suspenseful and highly original genre piece to the U.S. audiences this December,” Klaus Rasmussen, senior theatrical sales manager at Global Screen, said.

The film is produced by Syrreal Entertainment, which was founded in 2008 by Alvart. He is joined by CEO and producer Siegfried Kamml and producer Timm Oberwelland. Recent movies include “Nick – Off Duty,” starring Til Schweiger, and “The Final Journey,” starring Jürgen Prochnow. Upcoming theatrical releases include “Cut Off” with Moritz Bleibtreu and “Don’t. Get. Out!” with Wotan Wilke Möhring. A 10-episode series, “Dogs of Berlin,” created by Alvart, is in production, and is set to premiere worldwide on Netflix next year.