Mac and Jack head for Vegas for fun but are knocked out and put in a cell like "Saw". Rest of the team fly to Milan and try to "borrow" a diamond, hanging around a princess's neck, to get the terrorism data in it.
Phoenix teams up with a woman who's a soccer mom by day but a master thief by night to catch one of her contacts, an underworld criminal, who has hired her to steal a dirty bomb.
Mac, Riley and Bozer go on a weekend of survival training, then they run into a violent group of criminals who are searching for a lost crate of money. Jack and Matty go on a road trip to place Ethan and his family in witness protection.
An international crime boss offers to surrender if he's allowed to return to the United States to watch his daughter walk down the aisle; Mac and the team crash the wedding to ensure the crime lord doesn't run.
MacGyver and the team are assigned to escort and protect an ATF gun-sniffing dog who has a bounty on his head, only to discover they're not the only ones crashing the weapon drop.
The Phoenix Foundation must recover the body of a pilot whose plane crashed while testing an experimental laser mapping system that Mac designed; Riley tries to identify the hacker who tricked a SWAT team into arresting her and Elwood.
When Nicholas Helman resurfaces to carry out a killing spree, the team is forced to get help from the one person who knows him best- his protege, Murdoc.
Mac and Desi help a group of Syrian refugees who are being pursued by human traffickers; Bozer is trapped in Oversight's car, and it's rigged to explode.
Two American tourists go missing while doing a scavenger hunt through some of the world's most dangerous countries; the Phoenix team goes undercover as backpackers to find them and bring them home alive.
Matty's ex-husband Ethan asks her for help when a criminal organization kidnaps his wife and daughter; Matty must decide if she's willing to commit treason in order to help Ethan; Riley joins Billy and Mama Colton on a mission to Paris.
A cunning new adversary's carefully crafted plans force Mac to make an impossible choice: save the life of a friend, or save hundreds of innocent lives; Mac receives new information that will drive a wedge between him and his father.