When Oversight’s attempt to capture a drug cartel’s leader goes bad, MacGyver and Jack rush to Mexico to pull their boss out while racing through the heart of the country during Dia de Muertos celebrations. Also, Bozer and Riley use Halloween as a distraction to gather intel on a man accused of treason.

Mac and Jack hit the road for a weekend of relaxation in Las Vegas, but their mini-vacation is cut short when someone from their past abducts them and locks them in a concrete room. Also, Matty tasks Riley, Bozer and Leanna with stealing a diamond encoded with terrorist intel from a princess in Milan.

MacGyver faces off with a cunning new adversary whose carefully crafted plans put Mac at the epicenter of an impossible choice: save the life of a friend, or save the lives of hundreds of innocents. Also, Mac receives new information that will drive a wedge between him and his father.

The Phoenix team is forever altered when MacGyver’s Aunt Gwen gets into his head about family and connection and convinces Mac and Riley to join Codex. Also, Matty and Russ take their concerns about Codex to the White House.

When Russ is kidnapped, Mac and the team must break out a previously murderous psychopath, now pacifist, from prison to help find him. Also, while on the run, Mac and Desi are forced to confront their relationship issues.