Watch HDToday. In order to avoid the trauma of the past and his father-in-law's fight for custody of his daughter, Chinese boxer Gao Ran gave up his boxing career and lived in seclusion in Siem Reap, Cambodia. However, a sudden accident broke the peace. Gao Ran's daughter was involved in criminal activities of gangsters at home and abroad, and her whereabouts are unknown. Gao Ran was eager to save his daughter, so he went deep into Southeast Asia alone, and started a desperate struggle with the dark forces.