Primer is a 2004 American independent science fiction film written, directed, produced, edited, and scored by Shane Carruth in his feature debut. The film stars Carruth and David Sullivan, and depicts the events surrounding the accidental discovery of time travel.

Plot

Two engineers, Aaron and Abe, supplement their day jobs with entrepreneurial tech projects, working out of Aaron's garage. During one such research effort involving electromagnetic reduction of objects' weight, the two men accidentally discover an 'A-to-B' causal loop side-effect: objects left in the weight-reducing field exhibit temporal anomalies, proceeding normally (from time 'A,' when the field was activated, to time 'B,' when the field is powered off), then backward (from 'B' back to 'A') in a continuously repeating sequence, such that objects can leave the field in the present, or at some previous point.

Awards