While it’s not as confusing as Jake Gyllenhaal’s last time travel movie Donnie Darko, Prince of Persia: The Sands of Time may seem pretty strange to anyone who hasn’t played the video game. Time-sand? What happened to the flux capacitor?

Enter a new Prince of Persia featurette, focused entirely on the film’s story, and tasked with laying the whole thing out. The following video explains the sands and the dagger which controls them. It also namedrops the awesomeness of Parkour, which is their explanation for Prince Dastan’s ability to walk on walls. Watch: