Bill and Ted are a couple of high school idiots who use their time-traveling telephone booth to travel through time. Sometimes they would use their device to bring historical figures into the 20th century. Rufus was the time guardian assigned to keep an eye on the boys, who, when they weren't causing trouble in another time period, worked part-time at Mr. Keilson's hardware store.
Bill et Ted sont deux cancres à l'école secondaire mais ils ont mis au point une machine à voyager dans le temps sous la forme d'une cabine téléphonique. Ils naviguent ainsi dans le futur ou le passé et y rencontrent de multiples embûches...