|Season 1, Episode 18|
|Air date||March 10, 2017|
|Written by||Andrew Karlsruher|
|Directed by||Jonathan Brown|
When Mac and the team travel to Hawaii to aid in earthquake relief efforts, they team up with Chin and Kono from the Five-0 task force to rescue a group of government scientists trapped in a building. However, as they work on the complicated rescue, a group using the chaos as a distraction aims to steal the top-secret weaponry from the scientists, on a special crossover episode.
In a Hawaii Five-0 cross-over, the team reroute to Hilo, Hawaii as volunteers for Earthquake Relief with FEMA. Jack and MacGyver meet Kono Kalakaua and Chin Ho Kelly from the Hawaii Five-0 Task Force; Jack tells them about knowing Steve McGarrett. They rescue a group of government scientists trapped in a building by using a water jet cutter and radar detector. A Chinese group use the chaos as a distraction, aiming to steal the top-secret weaponry, called "Project 23", from the scientists in the building.
Jack and Kono reference the events from Magnifying Glass when Jack called Five-0 over Madison Gray which led into the events of Hawaii Five-0 episode Hahai I na pilikua nui which Kono reveals the outcome.
Chin tells Jack about his birthday resulting in his niece's kidnapping referencing the events of Hawaii Five-0 episode Ka'ili'aku when he and Jack talk about birthday parties as Jack planned to arrange Mac's birhday
Kono and Mac discuss Kono's marriage to Adam Noshimuri referencing A Make Kaua which was 2 years ago which Kono mentions, she also reveals that she met Adam through Five-0 arresting his father in season 1,
when Kono asks Mac if there was someone out there he likes, he mentions his ex girlfriend Nikki Carpenter who betrayed her country in the pilot episode The Rising but was revealed to be a cover in Screwdriver.
- Steve McGarrett is mentioned but does not appear.
Sam Hopkins: Your boss was a little vague about your skill set. What is it exactly you guys do again?
MacGyver: A little of this, a little of that.
Jack Dalton: Just point to the problem, we'll make it go away.
MacGyver: I know I'm going to regret this, but I think... you should throw me a birthday party.
Jack Dalton: Oh, yes. There it is.
MacGyver: Nothing too drastic.
Jack Dalton: No, no, no. It'll be--it'll be classy, dignified, and intimate.
MacGyver: Isn't that what you were going to name your autobiography?
Jack Dalton: Still is. It's also the way I'll describe your birthday party.
Special Guest star