McGarrett finds himself in need of the Five-0's help when he goes to North Korea with Jenna Kaye to deliver a ransom to rebels who are holding her fiance hostage. Meanwhile, the Five-0 investigate the murder of an investigative reporter who seems to have ties to Jenna. Singer and songwriter Jimmy Buffett guest stars as Frank Bama, a helicopter pilot and friend of Joe White's who helps the Five-0 in North Korea. (TV-14)