When the team intercepts a terror group’s message meant for Murdoc, Mac poses as the psychopath to save the intended target and find out why they want Murdoc to assassinate him.

Murdoc moves forward with his plans for revenge against MacGyver by recruiting his recently released former cellmate to infiltrate the Phoenix Complex as a “lab technician” and kill every agent inside.

Using a necklace and a microwave transmitter, Mac and the team attempt to locate Riley after her first solo mission with a group of dangerous hackers goes off the rails

Using a cassette player and a plastic bucket, Mac and the team attempt to extinguish a massive oil wellhead fire in a Nigerian village, set by a rebel group, which is trying to topple its government by destroying their most valuable resource.

MacGyver uses a heater and hot sauce to help a key presidential candidate in Ecuador receive a heart transplant he desperately needs after a rebel group tries to sabotage delivery of the organ.

Mac and the team follow a group of Indonesian mercenaries who are transporting a lethal amount of stolen nerve gas in the hopes of tracking them to their dangerous leader. Also, Jack confronts Elwood about Riley, and Bozer is pushed to his limit in spy school.

When 32 college students are stranded on a research ship in the Arctic Ocean with no heat and erupting fires, Mac develops an emotional connection to the group leader, via video chat, as he relays how to stay alive as they await a rescue ship. Also, Jack kidnaps Elwood to find out what scam he’s up to next, and Bozer’s feelings toward Leanna grow stronger.

While Mac participates in a challenge for government operatives to create robotic combat machines, he must help his biggest competitor, Allie, when her vehicle is hacked and heads to the Pentagon. Also, Jack attends his high school reunion, hoping for a showdown with his old rival who beat him out for homecoming king.

After one of Murdoc's go-to assassins agrees to hand over Murdoc to MacGyver in exchange for $10 million, the team finds itself protecting Murdoc from his former mentor, Nicholas Helman, who wants him dead. Also, Jack realizes he may still have feelings for Riley's mother, Diane.

MacGyver, Leanna, Riley and Bozer pose as honeymoon couples at a resort in order to gain information about a Serbian war criminal from his newly married son. Also, Bozer wonders if Matty knows about his relationship with Leanna, and Jack recruits Elwood to help him break into Matty’s home.

As Mac and the team investigate the suspicious death of Dawn's CIA supervisor, the evidence leads to a dirty CIA agent and a massive counterfeiting ring.

MacGyver gets a shocking surprise when he tries to tell Matty that he’s quitting the Phoenix Foundation.

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.