Ashfall (Korean: 백두산; Hanja: 白頭山; RR: Baekdusan), also known as: Mount Paektu, is a 2019 South Korean disaster film directed by Lee Hae-jun and Kim Byung-seo, starring Lee Byung-hun, Ha Jung-woo, Ma Dong-seok, Jeon Hye-jin and Bae Suzy.

Jo In-chang (Ha Jung-woo) is assigned to be the captain of a special forces team taking part in the operation.

Meanwhile, Jo In-Chang's pregnant wife Choi Ji-young (Bae Suzy) is alone in Seoul and struggling to survive amidst the disaster.

They locate Joon-pyeong, who was being held in a North Korean prison, and seek his knowledge in finding the correct mine closest to Paektu's caldera.

After threatening his dying wife to disclose the location of his daughter, Joon-pyeong guides In-chang's team to a power station, and they extract a piece of uranium from a nuclear missile.

This alerts the American garrison in South Korea, which sends soldiers to stop Joon-pyeong from delivering the uranium piece to several gangsters from China.

She manages to survive and eventually rescued by the US military, and met Professor Kang, who was also evacuating to the United States after his disillusioned feelings with the South Korean government.