A commercial crew aboard the deep space towing vessel, Nostromo is on its way home when they pick an SOS warning from a distant planet. What they don't know is that the SOS warning is not like any other ordinary warning call. Picking up the signal, the crew realize that they are not alone on the spaceship when a alien stowaway is on the cargo ship.

A solitary man who does not speak Spanish is an underground courier. Two men who are both thuggish and philosophical send him to Madrid with cryptic instructions. Over the course of a few days, he receives his instructions from a series of distinctive individuals who provide words of philosophy or of warning and also give him a matchbox with a tiny piece of paper, which he reads then eats, accompanied by espresso served in two cups. He is quiet, self-contained, focused on his work. He has rules....