The peace of a small Kansas town is brutally shattered when the malevolent entity within the local river seeks out an accomplice to help it escape from its liquid prison. For eons it has awaited a kindred spirit, and now it has arrived in the shape of Jonas Srossec, a deeply troubled and sadistic teen. With Jonas' assistance, the evil force wishes to feast on the flesh and souls of the harvested bodies, and when it has amassed enough fuel it will rise up onto the land with the singular desire to consume all within its path. Standing between the entity and its ultimate goal is Kevin, a young teenager, his infant brother, Daniel, and their elderly grandfather, Harry. Kevin has to battle his sanity when he begins to hear the voice of his baby brother within his head, offering instructions and guidance. Whereas Harry has to contend with the prophetic messages delivered during his dreams by his recently deceased wife. As a team they must share their knowledge and take action to defeat the combined threat of Jonas and the beast within the river before it is too late. If they fail, Grief will fall, and humanity thereafter.