Retired school teacher Eloise Parker, living alone with her tenant Adam Clay, a beekeeper, falls victim to a phishing scam that steals $10 from a charity fund she manages. Devastated, she commits suicide. Adam discovers her body and is arrested by FBI agent Verona Parker, Eloise’s daughter. After being cleared, Adam learns from Verona that the scam group is hard to track. Seeking justice, Adam contacts the Beekeepers, a mysterious group, to find those responsible.
Adam tracks down a call center run by Mickey Garnett and burns it down, scaring off employees. After a violent confrontation, Adam kills Mickey’s men and throws Mickey off a bridge, warning his boss, Derek Danforth, that he is coming for him. Derek informs Wallace Westwyld, a former CIA director, who contacts the current CIA director, Janet Harward. Janet learns Adam has retired from the Beekeepers. Adam kills the current Beekeeper, Anisette, sent to eliminate him, prompting the Beekeepers to declare neutrality.
Verona and Agent Wiley anticipate Adam’s attack on the Nine Star United Center in Boston, where Derek’s global scam call centers are managed. The FBI prepares to support them. Wallace, coordinating a group of ex-special forces, secures the inside of the building. Adam infiltrates the building, defeats the FBI SWAT team and Wallace’s forces, and interrogates manager Rico Anzalone, who confirms Derek is his boss.
Verona informs FBI Deputy Director Jackson Prigg that Derek’s companies are used by several US government agencies. She suspects Adam might kill Derek and possibly Jessica Danforth, the President of the United States, as Derek used stolen funds to finance her campaign. Wallace advises Derek to stay with his mother under Secret Service protection as Adam continues to elude capture.
At Jessica’s beachside mansion, Wallace hires mercenaries, including Lazarus, to protect her. Adam infiltrates the mansion, while Jessica learns from Jackson about her son’s illegal activities. Adam kills the mercenaries and confronts Jessica. She decides to reveal the truth about Derek’s scams. Enraged, Derek kills Jackson and takes Jessica hostage. Wallace tries to persuade Adam to turn away but fails. Adam breaks Wallace’s finger and reaches Jessica’s office, where he is surrounded by FBI agents.
Verona tries to dissuade Adam from killing Jessica and Derek. Derek attempts to kill his mother, but Adam kills him first and escapes onto the beach. Despite having a clear shot, Verona decides not to shoot Adam, who flees with the help of underwater gear hidden on the beach.