Detective Jake Peralta and his diverse colleagues work together to police Brooklyn's 99th precinct The squad includes overachiever Amy Santiago, tough-as-nails Rosa Diaz, sweetheart Charles Boyle and family man Sergeant Terry Jeffords Also part of the Nine-Nine are clueless veteran officers Hitchcock and Scully and civilian assistant Gina Linetti. The team is led by their more-serious-than-a-hunk-of-actual-granite boss, Captain Raymond Holt, in doing what they do best: busting bad guys.