A guy runs to a bus station, but he is too late: his girlfriend already left a minute ago, in a car of another boy. While waiting on the bench of the bus station, the guy finds a PC keyboard and, by accident, discovers that when he presses the “undo” button, it causes people and events around him to unravel again, just as they did a couple of minutes ago. The guy thus decides to push the “undo” button as long as needed to get the events to return to the point before his girlfriend left the station.