From One World to Another is an intimate documentary, a human and sensory journey through grief and friendship. After the accidental death of his best friend, actor Jérémie Renier begins a journey of contemplation thanks to the encounter with a French explorer, Loury Lag, who travels through uninhabited territories in extreme conditions. They will set off together across the Arctic ice floes. Left to their own devices, the two men will test each other, until they become alive again. An initiatory quest, which explores the territories of life, where the hostility of the world refers to death.