In 2020, Rémi Berchet undergoes knee surgery. Since then, he has struggled to regain his level despite working with his coach. For 2023, he sets two goals. Once the first one is achieved, he fully dedicates himself to the Diagonale des Fous. Accompanied by his mother and brother, Rémi embarks on an exceptional adventure, overcoming the heat of this formidable and feared race. A demanding race of 170km and 10,000m elevation gain that will push his body to its limits. Discover an intimate documentary to learn more about this determined, humble and talented man who achieves a magnificent performance in Réunion Island.