A group of humans arrive on Sirius 6-B to investigate an SOS signal sent out from the planet, which has been supposedly deserted since the destruction of the man-made weapons known as "screamers." ...

The blade-wielding, self-replicating race of killing devices known as Screamers is designed for one purpose - to hunt down and destroy all enemy life forms. This so dubbed man's greatest weapon ...

To be clear, Screamers isn’t a fantastic movie or anything, but to dismiss it out of hand is to diminish its efforts of at least trying to do something as philosophically meaningful as Blade Runner.