24 parts Complete MaturePART 1 - Leroy Jethro Gibbs and G. Callen have been friends for a long time. This delves into their friendship, how they met and how their close friendship came about. They are pulled together with both of their teams to take down enemies of Callen's and of his team, to protect the family of a dead Lieutenant Commander. Both of their teams, are shocked to discover their biggest secret.
PART 2 - Set fifteen months on, the Walker family settle into their new life with their new identities. Gibbs discovers a stranger in town whose a threat to his family. As he tries to contact Callen, Sam and Callen go off grid. Sidorov has returned to Los Angeles, causing grief for all the team.
PART 3 - Callen is recovering away from his family and team. Janvier remains on the loose as the team try to gain information to his where abouts. Things are changing in Half Moon Bay while Callen remains away. Will Callen be ready when Janvier comes? Will his team be able to find Janiver in time?