故事开始于1327年，梅森（汤姆·威斯顿-琼斯 Tom Weston-Jones 饰）、卡里斯（夏洛特·莱李 Charlotte Riley 饰）、戈文达（诺拉·冯·沃尔德斯塔腾 Nora von Waldstätten 饰）和拉斐尔（奥利弗·杰森-科恩 Oliver Jackson-Cohen 饰）四名好友在森林里玩，恰巧遇见了正遭到士兵攻击的蓝礼爵士（本·卓别林 Ben Chaplin 饰），蓝礼杀死了士兵自己却也受伤了。只有梅森一人帮助了受伤的爵士，爵士带着梅森埋藏了一封信，并告诉梅森，如果自己死了，一定要挖出这封信将它公之于众。
一晃眼多年过去，独裁专横的罗兰德爵士（彼得·弗斯 Peter Firth 饰）处死了原先的领主，并颁布了严苛的法令，拉斐尔则成为了罗兰德爵士忠实的拥簇。
“In the early 1990s, at the height of the international war on drugs, the government agency in charge of Britain’s borders, Her Majesty’s Customs and Excise, realized that they were losing the battle against drug smuggling. Their solution was extraordinary,” reads the logline. “In a top-secret operation, a small team of British Customs employees were sent undercover. Their task – to infiltrate Britain’s most dangerous drug gangs.” “They were not trained spies. These were ordinary men and women, plucked from ordinary lives around the U.K, put through a basic training regime then told to build new identities in the criminal underworld. These identities were called Legends.
改编自维克托·拉瓦列2013年的小说《The Devil in Silver》。聚焦搬运工人Pepper（丹·史蒂文斯 Dan Stevens 饰），因为坏运气和坏脾气，他被送到了一所名为New Hyde的精神病院，里面满是被社会遗忘的人。Pepper想要获得自由，就必须面对与他作 对的病人、怀着阴森目的的医生，甚至恶魔本人。这里是地狱般的地方，任何事情都不是表面那样，Pepper必须直接面对一个以New Hyde里人们的苦痛来蓬勃壮大的存在，但这样可能会证明：最可怕的恶魔恰恰是他自己。
