After his father is murdered, Lieutenant Commander Steven J. McGarrett decides to return home to Oahu in order to catch the killer. The governor offers him the opportunity to run a new task force where he is able to call the shots. Steve brings together his own team, starting with Chin Ho Kelly, an ex-Honolulu Police Detective and former protege of McGarrett's father. Kelly has been assigned to a federal security patrol after being suspected of corruption. Detective Danny (Danno) Williams is a New Jersey cop who recently moved to the island to be close to his 8-year-old daughter, Grace. Kono Kalakaua is Kelly's cousin and a rookie officer, fresh from the academy. McGarrett's team is given full backing from the governor.