A couple of minutes into 21 Bridges is a funeral scene, where the priest's eulogy clearly refers to a certain character as an "Avenger". It prompts a raised eyebrow, and sets the scene for what is to follow.
21 Bridges follows the story of Andre Davis (Chadwick Boseman), a second generation detective with the NYPD who has a reputation for being a trigger-happy cop. Upon answering that he felt no remorse when he discharged his firearm in the line of duty, and was only doing what he felt was right, Davis is assigned to a drug bust involving two cop-killers, who are on the run after ....