剧情介绍
約翰在黑幫雜處的街區長大，經養父嚴厲的訓練，練就高超的格鬥技巧。他在生日當天，莫名地被養父打昏，醒來驚覺雙腳遭「混凝土」砌住，他將混凝土打碎後，「混凝土」便成了他的代號。某晚，他與友人在A街遭人鬧事，他突破重圍還順手拿走對方的錢，市長得知後派殺手前去，他抓走約翰的妹妹貝塔妮，通知約翰在K街見面，約翰要如何從B街一路殺到K街，拯救自己唯一的親人呢？
John 'Concrete' Hong has one night to fight his way across a violent city and rescue the one he loves. After eviction from their apartment, John and Bethany Hong are forced to live on the streets of Union, a violent city where street gangs control the lower blocks. When John journeys to the bottom of the city to find work, the WCC gang corners him. After fighting his way out, he becomes the target of the corrupt Police Chief and his hired assassin, Finger.
