Bill & Ted's Riff in Time

The year is 2506 and something most unprecedented is happening to history. All throughout time, Personages of Historical Significance have been showing up in the wrong points of history. This is having egregious reverberations and is causing time rifts to materialise, threatening to disrupt the harmonic fabric of our reality! The Wyld Stallyns have put their latest tour on hold and are trying to locate all the misplaced Personages, returning them to their correct points in time and closing the rifts. At the centre of the disruption is the most heinous time fracture of all, located in San Dimas. If all of the rifts are not closed in time, then reality will fracture and the world will be destroyed...