When an informant claims to have information on a code-breaking device that would compromise the identities of every agent in the CIA, Shaw sends Steven and Samantha to Berlin to verify the man's claims. As the team travels throughout the city, they are surprised to learn that the device isn't as it seems. Amidst the danger around them, Steven and Samantha struggle to find the balance between being partners and a married couple while in the field. Back in Los Angeles, Lizzy connects with a man while catering his father's funeral.