The animation is a trailer for the role playing game Kelios: The Prophecy.  The video uses a paper-cut, 2.D look that recalls the magical of a long lost prophecy.

The video is punctuated by on-screen text that gradually reveal the prophecy as  the story progresses. The text is incorporated in the scenes, appearing as light shining through carvings in the paper.

Doom and fierceness are the core of the story. Depictions of fearful and hectic  escapes alternate with scenes of war and courage, showing a civilization that fights back against a terrible fate.