A kid rides a white horse backward through time to undo a war he never fought in. The magic isn't flashy, it's quiet, purposeful, the kind that only works when you're desperate enough to change everything. Bataar trades his certainty for a chance to save his father, and the OVA never flinches from what that actually costs him.

Bataar is a young Mongolian boy who wants to heal his father's leg, which was hurt in a war against a neighbouring tribe. Then a white horse suddenly appears in front of him, and Bataar sets out on a magical trip through time. His aim is to change history and stop that war from ever breaking out. The result is a single-episode adventure OVA built around a boy, a white horse and a journey into the past.