Dung fong tuk ying

A motley group of Chinese prisoners, led by Sammo Hung Kam-Bo as Tung Ming-sun, is sent on a covert mission to destroy a secret depot of missiles left behind by the US in Vietnam. The prisoners, including Yuen Biao as Man Yen 'Rat' Chieh, must navigate the treacherous jungle and battle the Vietnamese military, led by Yuen Wah as the Vietnamese General. As they attempt to complete their mission, they face numerous challenges and casualties, including the accidental death of Haing S. Ngor as Lung Yeung, the mentally ill brother of Lieutenant Colonel Lam, played by Lam Ching-ying. Ultimately, Tung, Rat, and Dai Hoi survive the mission and destroy the missiles, escaping through an underground tunnel and being rescued by a helicopter.