Hélène and Michel, a suburban couple from 1950s France, suddenly find themselves transported into the modern world. Faced with a complete cultural shift, they must navigate contemporary life with humor and confusion. Anchored by the chemistry of Didier Bourdon and Elsa Zylberstein, C’était mieux demain is more than a reversed Back to the Future. Vinciane Millereau uses this time leap to highlight the evolution of social norms and values, crafting a gentle satire filled with warmth and insight.