In the Tall Grass ratings (Movie, 2019)

When siblings Becky and Cal hear the cries of a young boy lost within a field of tall grass, they venture in to rescue him, only to become ensnared themselves by a sinister force that quickly disorients and separates them. Cut off from the world and unable to escape the field's tightening grip, they soon discover that the only thing worse than getting lost is being found.