The use of confidential informants, as this film shows in great detail, can be a problematic law enforcement measure.
In this case, the movie is about informant Bill O’Neal (LaKeith Stanfield), a young man who is arrested for pretending to be an FBI agent to steal a car. Rather than be charged right away, though, O’Neal is given an opportunity by bureau agent Roy Mitchell (Jesse Plemons). Not long before Mitchell gave O’Neal the opportunity, J. Edgar Hoover (Martin Sheen) announced that Black Panther Illinois Leader Fred Hampton (Daniel Kaluuya) needed to be monitored.
That’s the job offered by Mitchell, and to avoid prison time, O’Neal reluctantly accepts. O’Neal makes his way into the Black Panthers organization and over time, establishes himself as a full-fledged member. As a result, O’Neal begins getting closer to Hampton and is able to report his findings to the FBI. However, with tensions seeming to rise all around him, O’Neal finds himself being pulled in two directions.