After a high-speed chase, the team makes a gruesome discovery; Chin Ho and his ex-fiancee are awkwardly reunited.

The FIVE-0’s investigation into the murder of the state’s women’s volleyball coach leads them to find out more bad news about Kono, and Chin Ho reconnects with his former fiancée, Malia.

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.

Five-0 is in hot pursuit of a shooter who guns down one of their own, while another team member is forced to choose which of their kidnapped loved ones will live.

The team goes after Wo Fat and Delano for the death of an important person. Steve must resolve the issues between him and his "dead" mother, once he finds her alive and well.

Chin is questioned about his father's murder and how his relationship with Malia and her family could have adversely affected the investigation.