While Special Agent Pride and the New Orleans team investigate a Russian sleeper agent who was involved with Abby's brother, Luca, Sebastian flies to D.C. to partner with Abby on the forensics in the case. Also, Bishop drives through the night to deliver a package and work the case with the New Orleans team

Special Agent Pride opens his bar to the public with a Fat Tuesday party, but the celebration is cut short when he and Mayor Douglas Hamilton are both kidnapped from their respective Mardi Gras events and held hostage by an unknown assailant.