Nans and Mouts start from scratch, naked and penniless, in the Lyon region with the goal of going to the Morvan Forest to meet the big bad wolf. Armed with audacity and spontaneity, they must rely on the generosity of the people to provide them with clothing, food, and accommodation. They meet Jérémy, who recently recovered from serious health problems, and Cédric, who is depressed after a buildup of personal problems. The two vagabonds will discover people full of humanity with very touching personal stories.

Nans and Mouts set off naked and penniless from Guillaume's village, inland from Nice, with the dream of depositing treasure in the Mediterranean. To do this, the two travelers will have to travel to the sea, find a treasure, and learn to freedive to reach a haven of underwater beauty. But is it really possible to carry out such a project without money or equipment? Nans and Mouts will have to use perseverance and confidence to move towards their dream and deposit a mysterious treasure in the seabed.