Barney Greenwald, a skeptical lawyer, reluctantly defends an officer of the navy who took control of the Caine from its captain, Lt. Philip Francis Queeg, while caught in a violent sea storm. As the court-martial proceeds, however, Greenwald increasingly questions if it was truly a mutiny or rather the courageous acts of a group of sailors who could not trust their unstable leader.
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.