Watch Monster Hunters (2020) HD Full Movie Free on SolarMovie. Watch Monster Hunters (2020) online free. When an alien prison ship crash lands and unleashes creature after creature in the California desert...When an alien prison ship crash lands and unleashes creature after creature in the California desert, the Prisoners make quick work of the dozen that tries to stop them. Now, the only hope of stopping the aliens rests with a secret Branch of the Government specializing in alien weaponry.