NCIS: Hawaiʻi

An experimental Naval aircraft crashes on Oahu, and Jane Tennant and her team must find who is behind it before classified state secrets are exposed.

Tennant and NCIS must take down a notorious team of international thieves using WWII explosives on armored trucks before they complete their final big job and disappear. Lucy and Whistler have a standoff about their previous encounter; and Ernie's mission in the field is more alarming than he expected.

Kai goes undercover with one of Hawai'i's oldest surf gangs when a petty officer who's trying to help wayward kids find a new path in the Marines is murdered.

The team investigates a wounded marine who lied and fled the hospital to protect his son from a relentless drug ring. As they race to save them, Kai must set aside his personal feelings to care for his stubborn father.

A Japanese sailor is killed and evidence links the case to the murder of the victim's girlfriend back in Japan, NCIS must find the murderer before the wrong person is accused and the case triggers a diplomatic crisis.

The wife of a naval weapons Officer disappears. The team investigates and find the man who took her, dead. She left the vicinity around the time the man was killed. They look into her background but Whistler tells them to back off. Tennant relents and with the info they have, she deduces the wife works for the CIA. They find her but her husband gets taken. Whistler wants to take her but to save her husband, they need her.