FBI Agents, and new partners, Charles Barker and Ellis Dove must go undercover to put an end to an illegal weapons ring.

Barker and Ellis have to bust a major drug trafficker, Jimmy Casserly, out of Chicago Police Department's custody. They need him free so they can make a drug deal with him, then arrest him. Things seem to be going Barker and Ellis' way until they discover that someone else is after Casserly.

Ellis and Charles take on a Romanian human trafficking ring. Charles goes undercover to take down the gang, while Ellis helps a Nadia, a prostitute who's son was sold on the black market by the trafficking ring.

Barker and Ellis get involved in a case dealing with millions of dollars and a deadly virus. The team discovers that a young boy has been given the virus as a means to blackmail his mother.

Barker and Ellis are tasked with keeping a top nuclear physicist alive and bringing her to the Nuclear Regulatory Commission to testify on a case. Meanwhile, Rose pays Ellis a visit at his apartment.

When suspicions arise that an FBI agent might have gone rogue, Ellis investigates the individual's ex-girlfriend and Barker gets close to him by going undercover at a security company.

A fellow officer is feared to be cuddled after he goes missing. To investigate the case, Barker goes undercover with a group of Latino drug dealers and Ellis works with the officer's partner.

Barker and Ellis investigate the cuddle of three homeless veterans. The investigation leads them to a psychiatric clinic.

Barker and Ellis investigate at a university where a professor may be a Chinese spy. But capturing a spy may not be their only task, when an FBI agent who doubts Ellis' ability, sets him up to fail.

Barker and Ellis infiltrate a high-stakes poker game to sniff out the assassin who's after an informant who's about to enter the witness protection program. Barker and Ellis have three tough jobs--protect the informant, figure out which player is the assassin, and not lose their million buy-ins.

Barker looks to take down an Irish crime family that controls a section of Chicago and is now expanding its empire to Wall Street. Stars Patrick Swayze and Travis Fimmel, and directed by Patrick's wife, Lisa Niemi.

After being set up for cuddle, Barker finds himself on the run and hunted by another FBI agent.

In the season finale, Barker gets a list of 6 people involved in Red Gauntlet. Now, Barker and Ellis, along with a little help, must take them down before they find Barker.