It is one of the largest cave chambers on our planet: the Majlis al Jin in the Sultanate of Oman. An untouched place in one of the most fascinating countries of the Orient. And the ultimate challenge for two generations of the world's best extreme athletes, who could hardly be more different: Stefan Glowacz and Chris Sharma. Their goal: to become the first humans to conquer this underground cave by climbing, freely, without technical aids! Like bats clinging to the cave ceiling, in the dark, they ascend towards the light in this underground cathedral, where several commercial airplanes could easily park. Into the Light follows the two adventurers as they rise from this legendary, seemingly inconspicuous black hole in the stony desert. An adventure that guarantees goosebumps.