Using a cell phone and soccer ball, MacGyver and the team search for a Navy SEAL who is believed to be alive in captivity in the Middle East.
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 cuff links and wire, MacGyver and the team go undercover in a high stakes casino to steal diamonds from a vault before a terrorist group gets there first and trades the jewels for a weapon of mass destruction.
When Murdoc drugs and kidnaps MacGyver, Mac uses a needle and his teeth to escape and join the team to save Murdoc's next victim.
The team is pulled away from their Halloween plans when they head into the dreaded Bermuda Triangle to retrieve the Vice President's son after his plane goes down with a mysterious prisoner on board.
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 tabasco 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.
When MacGyver and Jack "steal" a priceless painting, using a table cloth and a shoe lace, in order to draw an infamous stolen art dealer out of hiding, they wind up getting conned out of the painting by the dealer's team. Also, Riley's estranged father, Elwood, asks to be part of her life, and Matty sends Bozer to a spy training camp.
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.
The LAPD interrupts the team's Christmas celebration to arrest Mac for terrorism when they find a body in a building destroyed by a bomb Mac built.
When Mac and Jack are trapped inside Mac's house, which his nemesis, The Ghost, has rigged with explosives, Mac uses a karaoke mic and an audio transformer to let the team know that this bomb is a distraction for a bigger one. Also, through flashbacks, Mac and Jack's contentious first meeting unfolds.
While Mac participates in a challenge for government operatives to create robotic combat machines, Mac 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.
When the team heads to New Orleans to track down the con artist who is posing as the wife of "Duke Jacoby", one of Jack's old CIA aliases, Jack finds himself in jeopardy when "Duke's" old enemies resurface looking for revenge.
After one of Murdoc's go-to assassins agrees to hand over Murdoc to MacGyver in exchange for 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.
Mac, Jack and Riley set out to find a mobster-turned-informant after he's kidnapped and taken to Chernobyl by an international crime boss who's worried he will deliver incriminating information to the CIA. Also, Bozer struggles to keep a secret from Matty.
When Matty and the team search for a former government tech who stole classified intel and has been evading capture, they reunite with the Coltons, the family of bounty hunters, who are pursuing the same man for different reasons.
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.
Mac and Jack attempt to rescue a billionaire's son after he is kidnapped by a former Navy SEAL who uses an EMP weapon to cut off power and communication lines to the Shanghai skyscraper where the boy lives.
While MacGyver is in Puerto Rico helping his friend rebuild his hurricane-damaged home, he is taken hostage in the bank his friend manages when robbers attempt to steal million.
Mac and Riley are attacked by a group of masked men after the government calls them in to examine a mysterious object that crash-landed in the Nevada desert. Also, Riley uncovers new information about Mac's father but questions whether to deliver it to him after he says he needs to move on.
MacGyver gets a shocking surprise when he tries to tell Matty that he's quitting the Phoenix Foundation.