Purple Storm

Purple Storm is an action movie made in Hong Kong. It is about a Khmer Rouge terrorist who is planning to use a chemical weapon to seed the clouds. He sends his son, who is a wanted criminal, and his friend on a North Korean ship to Hong Kong. The ship contains the container with the chemical. His son gets knocked unconscious, gets amnesia, and the Koreans are killed. A psychologist is used to try to bring his memory back. However, the psychologist wants to implant a new identity in him.