在科欽堡，一群不合群者聯合起來創建了一個摔跤團體，他們面臨內部競爭和滑稽的打斗，并隨著成長去應對更大的障礙。

　　故事發生在1970年代的愛爾蘭，克里斯（希里安·墨菲 Cillian Murphy 飾）是當地的罪犯領袖，維農（沙爾托·科普雷 Sharlto Copley 飾）則是來自南非的軍火販，兩撥人通過賈斯丁（布麗·拉爾森 Brie Larson 飾）和奧德（艾米·漢莫 Armie Hammer 飾）的牽線搭橋，準備進行一筆數額巨大的軍火交易。　　哪知道在交易當天，維農帶來的武器竟然并不是克里斯之前預定的款式，這讓性格爆裂的克里斯非常的惱火，他將這種言而無信的行為視作是對自己威信的挑戰。與此同時，維農的手下哈里（杰克·萊諾 Jack Reynor 飾）控訴克里斯的親信斯特沃（薩姆·賴利 Sam Riley）騷擾了他的姐姐，這讓兩個幫派之間的關系處于一觸即發的境地。

　　George is the scapegoat of his classmates. One day he cracks and shoots them. His best and only friend Blaise is accused in his place and sentenced to 7 years in a psychiatric hospital. At the day of his release, Blaise realizes he only has one family: his best friend George. But he does not want to hear about his childhood friend, as he tries to integrate with the "Chivers" a gang whose members wear red jackets and boots, drink milk, drive sport trucks and play an incomprehensible and violent game that mixes cricket and mental arithmetic.

　　A group of friends must confront their fears in a terrifying game.