In 1985, the young Marty McFly propelled himself exactly thirty years earlier to correct certain temporal paradoxes caused by his interventions in the past. Coincidence: the Vallois gallery celebrates its 30th anniversary this year! To celebrate this, it has decided to make its own Back to the Future, offering visitors the opportunity to travel from the artworks of the early years, brought especially from the reserves, to those produced by the artists during the lockdown. From Zemeckis' film, it takes up the title, but also humour, science and fiction, adventure, the extra and the ordinary, a taste for writing, words and images. Around fifty works are displayed in the two spaces of the gallery. Niki de Saint Phalle, Jean Tinguely, Julien Bismuth, Jacques Villeglé, Gilles Barbier and so many others meet and respond to each other, creating a joyful mixing of time and generation. With this exhibition, the Vallois gallery tells its story and shows that art endures in time and in crises.