An undercover cop is working with a political campaign because there are rumors the campaign has ties to domestic terrorism. But the longer they're undercover, the more they agree with the candidate's positions. As the investigation continues, with no signs of any connections, there's an assassination attempt in the candidate. The undercover cop stops it and works to protect the candidate. Twist, the candidate was in on it and it was an attempt to smoke out the undercover cop. As this is revealed to the cop, the terrorists attack goes off without a hitch. The cop is then left hanging, taking the fall for the attack.
