An armored transport bus with Naval brig detainees on board crashes and four prisoners manage to escape.

While Special Agent Pride and the New Orleans team investigate a Russian sleeper agent who was involved with Abby’s brother, Luca, Sebastian flies to D.C. to partner with Abby on the forensics in the case. Also, Bishop drives through the night to deliver a package and work the case with the New Orleans team.

The crossover starts on NCIS S13E12 Sister City (I).

NCIS agents McGee and Torres travel to New Orleans to partner with Pride and his team in the search for a missing homeland security theoretical terror playbook.

The crossover starts on NCIS S14E15 Pandora's Box (I).

While Pride fights for his life in the ICU, the team scours the city for the hit woman who attempted to assassinate him.