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 fiancé hostage. Meanwhile, the Five-0 investigate the murder of an investigative reporter who seems to have ties to Jenna.

On the eve of Chin Ho's wedding to Malia, the Five-0's investigation into a man left for dead in an abandoned WWII bunker crosses paths with Capt. Fryer's case of a Jane Doe.