Innocent avalanche

Mariana, Jonáš, Tim, Hardy and the twins, Alfa and Beta, meet in the Krkonoše mountains for a pleasant week of skiing. On the very first day, they set off on cross-country skis to Výrovka, where most of the group are staying. The short journey turns into unexpected drama when the sunny weather abruptly changes to a thick blizzard. As darkness falls and the chalet is nowhere in sight, the six are forced to spend a freezing night outdoors. Will the brave gang survive, especially with the added threat of avalanches in the mountains?