The lovesick Doctor Proctor has traveled back in time in a desperate attempt to alter history. He wants to stop the wedding between his beloved Juliette and the terrible Claude Cliché, but is trapped in time. Lise and Bulle have to help him back.

In this hilarious family movie, Doctor Proctor, a mad professor, invents a fart powder that gives people the ability to fly. Twins Lisa and Nilly get involved in his wacky adventures and together they try to outsmart a villain who wants to steal the magical powder. With the help of their adult-child friendship and clever inventions, they navigate through a series of comedic and thrilling situations.