Martin, a teenager with a keen passion for outlandish culinary experiments, along with his friend Charlène, a historian by blood, find themselves transported back to the Middle Ages after messing with an old toaster. Mistaken for wizards by the people of the time, the two friends must figure out what's going on while confronting familiar faces...

While Mixel tries the best he can to help along with Martin's parents, Charlène and Martin have escaped the flames and appeared somewhen else, where twists and turns won't end. Why is everything happening? To find that out... they must go Back to the Toaster!