A Knight's Tale(2001)
William Thather, a knight's peasant apprentice, gets a chance at glory when the knight dies suddenly mid-tournament. Posing as a knight himself, William won't stop until he's crowned tournament champion—assuming matters of the heart don't get in the way.
A Knight's Tale -
Currently you are able to watch "A Knight's Tale" streaming on Viaplay or buy it as download on Google Play Movies.