简介
When a young soldier, newly returned from war, gets caught up in a drug bust, he is recruited by the authorities to go undercover in a notoriously dangerous prison in order to figure out what is really going on.。胸无城府的国豪因为自己帮忙好友郭宝而误杀警察，入狱六年。其实这是郭宝故意布下陷阱加害国豪，并趁机强奸其女友。国豪知悉真相后想逃狱报仇，未成。六年后，郭宝接手其父的黑道事业，更加无恶不作，已经成熟的国豪决定勇闯虎穴讨回公道……。