A great adventure often begins with a secret. The youth group's hut in the Harz Mountains has burned down. Amidst the charred rubble, the boys and girls find a mysterious hole in the ground with an enigmatic time capsule. The first trail leads them from the Harz Mountains almost a thousand kilometers to South Tyrol, in search of a secret cave in the Alps ...
IMDb 4,5/1020231 h 23 min 