The team races to stop a corrupt DEA agent from selling stinger missiles to a drug cartel as Weller fights to keep everyone together under the increasing pressures of Jane's rift with the others and the uncomfortable addition of Nas as co-leader.
Weller and the team must race the clock to stop a series of escalating New York City bombings, while Jane is forced to go on an assassination mission to prove her loyalty...or suffer the consequences.
Nas and Weller navigate their new dynamic as co-leaders during the team's hunt for a museum gala assassin, who turns out turns out to be harboring a dark secret; Jane starts to see a softer side of her old organization.
After a prominent politician is almost killed during a rally, Weller and the team must work with US Marshal Allie Knight to take down a leader of the Irish Mob.
Weller and Jane disappear while undercover so the team has to turn to two criminals to figure out what happened; AUSA Weitz comes back to settle a score with the team.