There are several eight-thousand-meter peaks on our planet that are far more dangerous and difficult than Everest. The most formidable of them is K2 — 8,611 meters high, the mountain of mountains. This film explores why K2, rather than Everest, is the ultimate dream of climbers, and how extreme altitude changes people. The mountain of mountains is the best place on Earth to test your altitude gene. For the first time in history, the largest Russian expedition ever assembled is heading to K2, and most of its members are amateurs. Each of them already has experience climbing eight-thousand-meter peaks, and many have successfully summited Everest. But compared to this mountain, Everest will seem like a walk in the park.