On Scorpion Season 2 Episode 23, Team Scorpion is recruited to help prevent a decaying nuclear reactor from leaking. Yeah, that would be very bad. There's a plan in place to put a sarcophagus around the plant to seal in any radiation that leaks out of the dome. Team Scorpion comes in to test the ground, so they know where it is strong enough to hold the sarcophagus.
Sly, of course, is super happy about visiting Chernobyl. Things only get better when he learns he has to fly in a tiny plane above Chernobyl, and then that plane crashes into Chernobyl. The mission isn't going very well.
Walter, Happy, and Cabe manage to get their trapped team members out by dragging the plane out by using a merry go round. Well, most of the team members. Paige gets knocked down during the escape, and Walter runs back inside to help Paige get out. But before the two of them can escape, the opening collapses, trapping them.
Paige and Walter manage to find a way out. They have 4 minutes of oxygen left. Oh, and they need to get out before the rest of the team blows the place up to prevent a nuclear meltdown. No rush though.
While walking across essentially a tight rope, Walter drops and loses his oxygen tank. Paige breathes oxygen into him via a kiss, and the two of them make it out alive.
One problem: they are on the roof, and the whole thing still needs to get blown up. Miraculously, the two of them make it down safely. The building comes down before a nuclear meltdown happens.
The team makes it home safely. To make up for not enduring any life or death situations, Toby decides to make it up to us by getting kidnapped moments after picking up Happy's engagement ring by Mark Holland. Remember Mark? He used to work with Team Scorpion, but he's psycho, so he's been committed.