A woman named Laurie is fired from her team because she is now considered too old for the reckless job of downhill mountain bike racing. She comes back to Montreal and moves in with her brother, a physicist who devotes his time between girlfriend hunting and relativity theories. Obsessed with time and speed herself, Laurie tries to make a living as a bike messenger in the city jungle. By chance, she comes across the shop of a grumpy old Italian man named Lorenzo, a former road cycling champion now holed up in the back of his shop building wheels. Lorenzo instantly detests Laurie, but the young woman is stubborn and keeps coming back. One night, they decide to face each other in a peculiar duel. Lorenzo shows Laurie how every victory is relative and that-speaking of relativity-speed is not the only way to bring time to a halt.