A friend of Lucy's brings her suspicions to the F.B.I when rumor begins to circulate that the large company she works for may be going under. After work, the team heads to the football field, hoping to retain control of the infamous trophy.
After Bobby tries to prevent a man from attacking a woman, he is soon suspended from the F.B.I when the man turns out to be a Sudanese diplomat with immunity from U.S law enforcements. Then when the man is connected to a slave trade market, Darcy gets into some trouble of her own after she makes the story public knowledge.
The F.B.I races against time track down a crate of strontium which they believe will be used to make a large nuclear bomb. Lucy fears for her family who will be coming into town for her sister's wedding.
Two security trucks, carrying a great deal of money, and their drivers go missing while on the job. While Jack and the rest of the team search for them, Sue helps Lucy with her sign language when the two go to a deaf club where speaking is not permitted.
When an unsuccessful raid by the F.B.I coincides with the disappearance of one of Sue's informants, the team initially suspects terrorists as the source of the leak. But soon it seems that a Wisconson senator is behind it.
The F.B.I team's favorite waitress, Kitty Chen, seems to be involved in software piracy and has been using Tara's business card in the process. After further investigation, the case appears to be connected to some drug dealers. In the meantime, Myles is being considered for the candidacy for the new face of the F.B.I.
Trying to catch a long wanted criminal, the F.B.I team must use a jail bound con man in order to get him. Unfortunately, their informant happens to be Bobby's criminal father who he is less than happy about working with.
Sue and Myles are assigned to a special task force trying to take down a South American drug group but things start to go wrong when an agent is killed in the field and Sue is blamed. With Troy and Charlie's help however, the team might just be able to remove the blame.
When it seems that an innocent man was convicted of being a serial killer long ago, the F.B.I starts a new search using evidence from a recent killing that resembles that of the old murderer. In the meantime, Jack goes to court when he is accused of killing and traumatizing chickens.
Three random people are all shot by the same man. With so little evidence to go on, the team is stretched to the limit forcing Jack to take drastic actions in order to catch the sniper, actions that could put his life in danger.
Sue and Lucy dig up an old case concerning a young bank teller who was shot. However, with so little evidence, the girls find it hard to make any progress. In the meantime, the boys film their on-line videos for an upcoming bachelor auction.
When the F.B.I notice some unusual phone calls between possible terrorists and D.C citizens, they decide to do some surveillance. In order to remain inconspicuous, Sue and Jack pose as a newly married couple and move into the house next door to the suspects.
The team continues their investigation believing that the suspects intend to spread the bubonic plague. With Betty as their only hope of catching the criminals, the team races against time to stop them in their tracks.