In a world surrounded by sailors, marines, spies, cops and politicians Special Agent Gibbs had given up hope that he would ever have children of his own after losing his wife and daughter 23 years before. Gibbs has created a family with his team and treats them as his own children. When a case to protect Petty Officer 3rd Class LJ Donahue brings LJ and Gibbs face to face his whole world changes in an instant with a twenty-year secret coming to light. Team Gibbs is left reeling when they find out that the gorgeously mixed Petty Officer is actually Gibbs's illegitimate daughter. Can the two make up for lost time? Will the team be able to accept her into their family?