[...] Sarah wasn't in a damsel in distress who happened to be in the wrong place at the wrong time, she was gathering intel on Barrios that could put him away for good, and, well, when you do that to fearsome arms dealers, they tend to lock you up in their dingy dungeons.
MacGyver (Lucas Till) MacGyver'd an arc welder using a car battery to cut down a steel door and fashioned night-vision goggles out of a TV remote, a microscope and some glasses, Riley cut the power to Barrios' hideout to give MacGyver the advantage and Jack made some jokes ("Anyone call for an Uber?") and probably shot someone.
[...] the rest of the team was on board despite it going against protocol.
Holed up in a maximum security evil arms dealer's lair, Barrios was a tough get, but luckily, he kept large piles of ammunition boxes just lying around outside, because he's an evil arms dealer and that's what they do when they can't find a place to put all their ammo, I guess.
[...] the team caught Barrios and saved the day.
Back at HQ, Jack contemplated giving his relationship with Sarah another shot, but fate is cruel and Sarah's fiancé showed up to thank Jack for rescuing her.
MacGyver spent several scenes sitting on the floor of Nikki's (Tracy Spiridakos) apartment (after he broke in, of course) trying to find clues as to her whereabouts and what led her to betray his trust and strike out on her own.