While Michael is tasked by the organisation he infiltrated to take down a drug smuggler, Fiona, Jesse and Strong find out more about its leader, James. Sam helps Michael with his first job with the organisation he infiltrated.
While Mac and Jack are tracking a dangerous fugitive, a family of bounty hunters kidnap him, and Bozer and Riley try to hack into Jack's CIA file.
Both sides of McCall's life converge when her daughter Delilah and her school friends are threatened by a European crime syndicate for being eyewitnesses to the outfit's execution of a drug cartel boss.
Bull puts aside his personal grievances to help AUSA Reilly, who prosecuted him for jury tampering, bring one of the world's most dangerous drug lords to justice; the pair enter into a hesitant partnership.
Sebastian's high school friend asks for help when her business partner is killed at a gaming convention. FBI Special Agent Raymond Isler believes Adrian is the hacker that the Cyber Crimes division has been tracking for years.