When strange waves begin disrupting a coastal village, Kai, a fisherman’s son who can sense the sea’s moods, discovers a carved piece of driftwood that gives him terrifying visions of destruction. As city officials plan to build a breakwater, the ocean sends a violent warning. An earthquake triggers a massive wave that devastates the shoreline, but Kai confronts the sea and it spares the survivors. Trapped between a raging ocean and a swelling river, the villagers realize the disaster is not random. The wave is not only destruction but communication, forcing them to respect nature’s power and choose survival through understanding rather than control.
