After Ziva's apparent death, Tony raises their daughter, Tali. Years later, Ziva returns and reunites with Tony. Tony's company is attacked, and the family travels to Europe, trying to learn who's after them and to trust each other again.

Follows the Major Case Response Team (MCRT) from the Naval Criminal Investigative Service (NCIS), as they get to the bottom of criminal cases connected to Navy and Marine Corps personnel.