Unless someone is knowledgeable enough to translate it, there's a disclaimer at the beginning of the film stating otherwise. In short, the absence of English subtitles doesn't affect the overall story.
The Ötztal Alps, more than 5300 years ago. A Neolithic clan has settled near a creek. It is their leader Kelab's responsibility to be the keeper of the group's holy shrine Tineka. While Kelab is hunting, the settlement is attacked.
How much did Iceman earn at the worldwide box office?