The Naval Criminal Investigation Service's Office of Special Projects takes on the undercover work and the hard to crack cases in LA. Key agents are G. Callen and Sam Hanna, streets kids risen through the ranks.
Steve McGarrett returns home to Oahu, in order to find his father's killer. The governor offers him the chance to run his own task force (Five-0). Steve's team is joined by Chin Ho Kelly, Danny "Danno" Williams, and Kono Kalakaua.
A famed major league baseball announcer who suffers an embarrassing and very public meltdown live on the air after discovering his beloved wife's serial infidelity decides to reclaim his career and love life in a small town a decade later.
Underground centers on a group of slaves planning a daring 600-mile escape from a Georgia plantation. Along the way, they are aided by a secret abolitionist couple running a station on the Underground Railroad as they attempt to evade the people charged with bringing them back, dead or alive.