Bob Wilson is locked in his room, doing work, when he finds there is another person in his room telling him about time travel; and asking him to go through a Time Gate.
Walking through the Gate he is met by an older guy(Diktor) saying it is 30,000 years in the future.
Bob walks back through the Gate to find himself looking at the original version of himself in his room.
Bob walks back through the Time Gate and is met with Diktor and is given a list of things to bring back to him.
Bob sees this scene for the third time, collects the list, goes back in time 10 years to make himself the ruler, taking his hat and the translations.
Bob gives himself the name Diktor, experiments with the Time Gate, meet the people who created it, then shuts the portal off for years. Then waits and tells his younger self the same things he was told.