In The Great Flood, a mother and her young child are struggling to survive "the last day on Earth" as a massive flood ravages the apartment building where they live. ADVERTISEMENTNetflix released a preview of the "sci-fi disaster film," due Dec. 19, on Monday. Kim Da-mi portrays An-na, who studies artificial intelligence and cares for her son Ja-in, portrayed by Kwon Eun-seong, according to a press release. What begins as a stormy morning at home becomes a life-threatening emergency as the world is consumed by water. As the trailer continues, it becomes clear that An-na's mission is to create new life elsewhere.