《黑社会（国）》是一部于2005年上映的惊悚、剧情、犯罪类电影，由中国星娱乐有限公司、银河映像及一百年电影有限公司联合制作，杜琪峰担任导演。影片由任达华、梁家辉、古天乐、张家辉和林雪等一众实力派演员领衔主演，投资高达4000万港币。

故事背景设定在一个传统的黑帮组织内部，这个帮派每两年一度都会选出新的老大。然而，在这一次老大角逐中，帮派内部出现了一系列意外事件，让选出新老大的过程变得异常复杂和危险。

影片的故事主要围绕着帮派里的“五虎”展开，这五位身怀绝技、势力雄厚的成员被委以追查老大信物的重要任务。而在他们寻找信物的过程中，也不得不面对各种阻碍和危险。同时，他们还不得不竞争加入老大角逐的权力游戏，帮派内部的争斗日益白热化。

在这个充满着权谋和危险的黑帮世界里，每个角色都背负着不同的目标和过去，纷争不断。而在这场复杂的帮派之争中，每一个决策和行动都可能影响着整个局势的走向。

《黑社会（国）》电影展现了黑帮世界内部的复杂关系和不可预测的危险，观众将随着情节的发展，亲身感受帮派成员的心理斗争和情感冲突。影片中的演员们也将通过精湛的演技，将各自角色的性格和内心情感展现得淋漓尽致。

"Underworld (Country)" is a thriller, drama, crime movie released in 2005, produced by China It is co-produced by Star Entertainment Co., Ltd., Galaxy Image Co., Ltd. and Centennial Film Co., Ltd., with To Qifeng as the director. The film is starring Ren Dahua, Leung Ka Fai, Louis Koo, Zhang Jiahui and Lam Suet and other powerful actors, with an investment of up to 40 million Hong Kong dollars.

The background of the story is set in a traditional gang organization. A new boss is elected every year. However, in this boss competition, a series of unexpected events occurred within the gang, which made the process of selecting a new boss extremely complicated and dangerous.

The story of the film mainly revolves around the "Five Tigers" in the gang. Five members with unique skills and powerful forces were entrusted with the important task of tracking down the boss' token. In the process of looking for the token, they also had to face various obstacles and dangers. At the same time, they also had to compete to join the power game of the boss, and the struggle within the gang became increasingly fierce.

In this gangster world full of intrigue and danger, every character has With different goals and pasts on their backs, disputes continue. In this complex gang battle, every decision and action may affect the direction of the entire situation.

The movie "Underworld (Country)" shows the complex relationships and Unpredictable and dangerous, the audience will experience the psychological struggles and emotional conflicts of gang members with the development of the plot. The actors in the film will also show their characters' personalities and inner emotions to the fullest through their superb acting skills.