Valley of the Lanterns

Porter, a young villager, is asked to help his mysterious grandmother Olistene, who makes the village's lanterns for its annual festival while chasing a secret she has sought all her life. When she finally uncovers it, she traps the village in an endless loop, reliving the same day over and over.

An animated film released in France as La Vallée des lanternes.

We dubbed the film into French.