The agents continue to work on closing their ongoing cases, while repairing broken relationships. Meanwhile, Briggs takes a high risk operation within the Armenian Mafia. Briggs tries to keep control of Ari Adamian. Meanwhile, Charlie must make a difficult decision regarding her pregnancy. While Mike’s visions and addiction to pain medications start affecting his ability to function in the field, Briggs coaxes a former FBI agent out of retirement to help take down Ari.