布里克（詹姆斯·卡格尼 James Cagney 饰）是一位非常具有正义感的律师，他的好友在不久之前遭遇了黑帮毒手，不幸身亡。这件事情深深的撼动了布里克，他决定放弃律师身份，加入美国司法部和联邦调查局，成为代号为“G”的特工。
在经历了一连串严苛的训练后，布里克被分配到了芝加哥办公，这是众所周知的罪恶都市，暴徒伤人抢劫的案件屡屡发生。布里克上任之后，暴徒一个又一个的被捉拿归案，黑恶势力遭到了极大的打击。在这个节骨眼上，布里克被挖出，曾经接受过黑帮的资金援助，这让他失去了上级的信任。与此同时，为了打击报复，黑帮绑架了布里克的女友（玛格丽特·琳赛 Margaret Lindsay 饰）。

Although loudmouthed braggart Jerry Plunkett alienates his comrades and officers, Father Duffy, the regimental chaplain, has faith that he'll prove himself in the end.

After two gang-related killings in "Center City," a suspect (who was framed) is arrested, released on bail...and murdered. Inspector Briggs of the FBI recruits a young agent, Gene Cordell, to go undercover in the shadowy Skid Row area (alias George Manly) as a potential victim of the same racket. Soon, Gene meets Alec Stiles, neurotic mastermind who's "building an organization along scientific lines." Stiles recruits Cordell, whose job becomes a lot more dangerous.

A financially-strapped charter pilot hires himself to an oil tycoon to kidnap his madcap daughter and prevent her from marrying a vapid band leader.

During a cross-country lecture tour, notoriously acerbic radio personality Sheridan Whiteside slips on the icy steps of the house of the Stanleys, a prominent Ohio family, and is forced to recuperate in their home during the Christmas holidays. The overbearing, self-centered celebrity soon comes to dominate the lives of the residents and everyone else who enters the household. He encourages young adults Richard and June Stanley to pursue their dreams, much to the dismay of their conventional father Ernest.
Meanwhile, Whiteside's spinster assistant Maggie Cutler finds herself attracted to local newspaperman Bert Jefferson. When she reads Bert's play, she is so impressed she asks Whiteside to show it to his contacts, and then announces she will quit his employment and marry Bert. However, her boss is loath to lose such an efficient aide and does his best to sabotage the blossoming romance...

Robin Hood fights nobly for justice against the evil Sir Guy of Gisbourne while striving to win the hand of the beautiful Maid Marian.