Once upon a time in 2001 at the FBI Academy in Quantico. 4 women are in the final week, in an exercise, in a team. Each team must pin other teams. Everyone has a practice weapon. In 2023, Lucas Devereaux begins his first day at NCIS in New York City. How could he have guessed that his first day is so closely linked to that fateful night at the FBI Academy. And what happened back then anyway?