NCIS: ORIGINS follows a young Leroy Jethro Gibbs (Austin Stowell) in 1991, years prior to the events of NCIS, and is narrated by Mark Harmon. In the series, Gibbs starts his career as a newly minted special agent at the fledgling NCIS Camp Pendleton office, where he forges his place on a gritty ragtag team led by NCIS legend Mike Franks (Kyle Schmid).