NYPD detective Danny Reagan takes a position with the Boston Police Department and is paired with detective Lena Silver, the eldest daughter of a prominent law enforcement family. The Silver family is comprised of Boston district attorney Mae Silver, Boston PD detective Lena Silver, police superintendent Sarah Silver, rookie cop Jonah Silver and renowned Baptist pastor Reverend Edwin Peters. As Reagan settles into his new city, he also hopes to reconnect with his younger son, Sean, who is beginning his own career in Boston.