The Mysterians

In this gripping sci-fi tale set in Japan, an alien race from the devastated planet Mysteroid arrives with advanced technology that leads to a small village's mysterious disappearance. The extraterrestrial threat then unleashes a massive robot upon the city during nightfall, causing widespread chaos. Interestingly, these invaders claim to be peaceful beings and request a tiny piece of Earth land along with permission for their members to marry human women. As humanity grapples with this unexpected proposition, they're faced with the dilemma of whether to concede or stand up against the potential threat that lies beneath the aliens' pacifist facade.