Victor, an unemployed film director, his wife just died and left him a 9-year-old son. The difficulties depressed him so much and he became a drunk. The alcoholism was the only way to allow him to escape into the LaLaLand, the drunken illusions had become so real that he evolved into a great dreamer, telling wonderful stories to his son. His drunkenness also made him a would-be director who thought he himself actually directed those fantastic stories he told his son.
一个贫困乡村利用当地的温泉资源，建了一个温泉山庄，却因宣传推广不到位而生意清淡。小村决定组织乐队排练节目参加旅游文化节。却因沟通的乌龙，影视公司的女业务员用极低的价格接下了这个业务。为了完成任务，将五个性格迥异的人强扭到一起，故事由此展开。
“暴食”、“贪婪”、“懒惰”、“嫉妒”、“骄傲”、“淫欲”、“愤怒”，这是天主教教义所指的人性七宗罪。城市中发生的连坏杀人案，死者恰好都是犯有这些教义的人。凶手故弄玄虚的作案手法，令资深冷静的警员沙摩塞（摩根•弗里曼 Morgan Freeman 饰）和血气方刚的新扎警员米尔斯（布拉德•皮特 Brad Pitt 饰）都陷入了破案的谜团中。他们去图书馆研读但丁的《神曲》，企图从人间地狱的描绘中找到线索，最后从宗教文学哲学的世界中找到了凶手作案计划和手段的蛛丝马迹。凶手前来投案自首，这令众人都松了一口气，以为案件就此结束，怎料还是逃不出七宗罪的杀人逻辑，这次凶手瞄准的目标，是那个犯了“愤怒”罪的人……
