After Bob gets his cover blown in Africa, he tells Jonas to cancel a visit a dignitary is taking to the area because of the danger. However, the official refuses and something shocking is quickly learned about why he really wants to go there. Meanwhile, Kim has an encounter while at the radio station and Molly gets offered a real estate opportunity.

Keith Soto returns to the base for a reunion and it's quickly discovered by Jonas and Col. Tom Ryan that he is a newspaper reporter who is writing an article that will expose the Unit. Jonas decides there is only one way to get him to not print the story. Meanwhile, with some help from Tiffy and Kim, Molly tracks down the woman who scammed $40,000 of the women's investment fund.

The Unit is called in to consult on a bomb planted in an Atlanta bank, but they soon learn that the bomb might be nuclear. Meanwhile, Bob and Kim decide to take a much needed vacation, but Kim soon discovers that Bob has whisked her away on a mission and wants her to help him out.

The Unit ends up detaining a former Yugoslav general who was wanted for war crimes and then allows lets the U.N. take credit for their capture. However, the criminal soon escapes U.N. custody and he is now seeking retaliation against Jonas for capturing him. Meanwhile at the base, Tiffy is convinced that Mack has decided to re-up with the Unit and she's thinking of divorcing him, and Kim is the recipient of some disturbing news.

Jonas is still in hiding, Mack and Hector are still imprisoned, Charles is on the run, Bob is in Mexico, working for the CIA and Colonel Ryan is again called to answer question before a Congressional hearing.

Jonas works out a plan and the team reunites to clear their reputation. Kim is working behind the scenes to keep the CIA away from the other wives.

The Unit is back together and ready to take on their next assignment when a bomb filled with a nerve agent stolen from a nearby base is discovered to be on its way to their home. On the home front, Jonas and Molly make plans to spend time together, Mack is ordered to move out of his home, and Kim proposes a new show for the station but ends up handling a crisis.

The team travels to Abidjan, Ivory Coast to aid personnel from the American Embassy. They must get the Americans and their families out of the area. On the home front, Jonas’s daughter has enlisted in the Army and he wants to train her as well as to test her resolve.

Jonas must recover a chip containing information that could prevent a possible terrorist attack.

Mack, Charles and Jonas are assigned to protect an American musician while she tours the army camps in Iraq, while Bob is assigned to transfer a prisoner from a high-security prison.

The Unit is in Lebanon when Charles is seriously wounded. They must think and act quickly to save his life. On the Home Front, Tiffy's problems continue to build when a man attempts to tow her car. The women stand up and fight to protect her.

Jonas goes on a solo mission, enlisting the help of some local militants to hunt down a terrorist known as "The Butcher". Charles is still recovering in the hospital, Mack takes on the task of arranging Hector's final funeral preparations, with the help of the other wives and Bob has been ordered to deal with the rescued journalist. Ryan must deal with the man sent by Washington to oversee the cover story.

Charles goes undercover among gang members from his old neighborhood when it's discovered that they've been stealing explosives and weapons. Meanwhile, Tiffy gets hurt at work and Mack goes after her attackers.

In Montenegro, Bob has a moral dilemma when he disagrees with the team's mission. Tiffy discovers some information about Molly's past and decides to look into it further.

A Russian scientist and an Britsh MI5 agent are suspected of collusion. Jonas is sent to London to team up with the agent. However, things get complicated as Jonas had been engaged to the agent's wife earlier.

The Unit enters the SERE (Survival, Evasion, Resistance Escape) training course and they are lead to believe that they will be guards. The group is soon shocked to discover that they are actually the POWs for an undetermined amount of time.

The Unit must try to get a listening device to an agent inside the Iranian embassy where U.S., Iranian, and Russian diplomats are meeting. Many are speculating that the Russians are attempting to sell the Iranians material to make a nuclear weapon. Meanwhile at the base, Tom tries to end his affair with Tiffy but she won't listen to him and Kim notices Tiffy at a motel room and does not know what she should do.

Bob and Hector head to New Guinea to retrieve a black box from an Army aircraft that was shot down. The wreckage is located on sacred grounds and they need permission of the local tribes to retrieve the item. They both must face their own battles to gain the acceptance of the tribe in order to succeed with the mission. On the home front, Crystal tells a reporter about Mack to get even with him for rejecting her. This action endangers the entire team as well as the National Security of the country. Mack must enlist the aid of the other Unit members to neutralize this threat.

Jonas and a seriously wounded Mack take refuge in a monastery where he is ordered to steal the monks' most prized possession. Back home, Bob is asked to perform a dangerous mission that will reveal the darkest side of his job to Kim.

Jonas and the team must travel through enemy territory to bring a young bride to her groom, preserving a truce between two warring Afghanistan tribes; Kim and Bob try to expose a man who is linked to terrorists.

The mission is to take control of a South Korean submarine to assist in the defection of a North Korean Scientist. The team find themselves confronted by several roadblocks. On the submarine, the South Korean Captain does not want to take orders from Jonas. On the home front, Kim has a dream that shares many similarities to the current mission. Ryan thinks that Bob told Kim about the mission and threatens to scrap the mission and wants to fire Bob.

As the Unit fights to rescue Jonas's old friend, a broken helicopter gas tank and nearby guerillas impede their mission. Meanwhile, Tom goes to extreme measures to extract information from a recovering alcoholic whose husband may have been behind a terrorist attack.

The team is sent to Pakistan to help an undercover operative foil a terrorist attack on many cities. On the home front, Molly and Tiffy help one of Tiffy's former students and Kim and Bob welcome a new addition to their family.

The team is assigned to stop of shipment of smuggled diamonds and Bob is conflicted when he sees one of the men helping themselves to the diamonds. On the home front, Molly and Kim are raising money to help the men and women serving in Iraq. Tiffy debates the war with protesters from a local school.

Jonas and Bob, on personal time, rescues a young girl from a cult leader as a favor to an old friend. Tiffy covers for Charlotte and finds herself in a lot of trouble.