Michael's deal with the CIA sends him to the Dominican Republic to infiltrate a terrorist organization headed by an old contact. Sam, Fiona, and Jesse try to move on with their lives, but are drawn back in when someone starts asking questions about Michael's whereabouts. Maddie tries to get custody of her grandson.

Michael returns to Miami to track down someone who is trying to blow his cover; Michael is forbidden from contacting his crew.

Michael meets a former Russian operative who now works as part of Burke’s mysterious organization. In order to get out of Cuba, they’ll have to outwit a bloodthirsty counterintelligence expert who’s locking down the island. Strong convinces Fiona to help Michael’s mission by making her an offer she can’t refuse.

Michael and Fiona pose as hackers at a malicious programming syndicate in order to steal information for Sonya. But Michael’s life gets complicated when working with Fiona again brings back painful memories. Meanwhile, Sam and Jesse help Barry track down a former girlfriend in exchange for falsified documents.

When Michael discovers an old friend digging up secrets that could expose his cover, he must decide just how far he will go to protect the mission. Meanwhile, Sam and Jesse are thrust in the middle of a street war involving a decade-old murder after Fiona’s boyfriend is targeted by a coldblooded gang member.