In emblematic places around the world, Frédéric Lenoir, philosopher, sociologist and writer, goes to meet those who experience a spiritual quest, both religious and secular. A pilgrimage that mixes the voices of anonymous witnesses and personalities such as the Buddhist monk Matthieu Ricard, the apneist Guillaume Néry and the astrophysicist Hubert Reeves.

• Oscar Ajanel
• Lina Barrios
• Hoshino Fumihiro