In their garage experiment, Aaron and Abe notice an altered growth rate in proteins that they can't explain with conventional models. The only conclusive explanation for this observation seems to be a change in space-time. Can the two maintain control of their experiment?

Director, screenwriter, editor, soundtrack composer and lead actor Shane Carruth, himself a mathematician by training, shot PRIMER largely in his garage.

„The budget was reportedly around $7,000, but that was enough: The movie never looks cheap, because every shot looks as it must look.“ (Roger Ebert)