Navy segel Steve McGarrett returns to his native Hawaii to investigate the murder of his father, John McGarrett, who was an officer in the Honolulu Police Department. He is enlisted oleh the Governor of Hawaii, a friend of his father's, to head a new task force with legal immunity to clean up the underworls of Oahu. In turn, McGarrett enlists Honolulu newcomer Danny Williams, a divorced detective who moved from New Jersey to be closer to his daughter; Chin Ho Kelly, a disgraced police officer and a protege of McGarrett's father who was wrongly accused of corruption; and Kona Kalakaua, Chin Ho's cousin, a former surfer and soon-to-be Police Academy graduate. Together they discover a link between the man who killed McGarrett's father and a Chinese human trafficking ring with a tahi lalat in HPD.