Three months after quitting the Phoenix Foundation and moving to Nigeria, Mac puts aside his differences with his father and returns when he hears Jack is the target of a murderous dictator he double-crossed.

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.

Murdoc abducts MacGyver’s girlfriend, Nasha, to force Mac to help him rescue his son, Cassian, from a kidnapper. Also, a dangerous individual from Murdoc’s personal life shows up, giving Mac a glimpse into the villain’s past.