The main characters of the movie Primer, Abe and Aaron, along with their friends, are trying to create a thing that could change the common understanding of space and time. As a result, they got something that slightly resembles a time machine. The characters start thinking about the great prospects their first-rate invention can lead to and the opportunities that will appear in the future. However, later it turns out that time experiments have their pitfalls. It is a pity that the characters cannot understand this immediately.