Castle. Sarah walks in, and Casey says he thought she was on a fancy date with Chuck, since he left the store in his tux. She's like, "He's in a tux?" They quickly roll back the surveillance tape and see that he and Morgan have tuxes and symphony tickets. Sarah says he must want to prove them wrong about Kuti, but Casey says he's going to kill them both. At the concert, Chuck's fallen asleep. Morgan nudges him and asks why he's on stage. Chuck says he isn't, but then he is, only the room's empty, except one seat, where Shaw's there and tells Chuck he shot him. Shaw says this dream isn't about him, it's about a scientist, Dr. Kowambe. Chuck sees him hold a knife to Kuti's throat. Chuck wakes up and sees the scientists sitting next to the president. The lady shushes them again, and Chuck tells her to put a sock in it. He tells Morgan to stay put, but first gives him his backup tranq gun, only to be used in life or death situations.
Casey and Sarah show up, and see Chuck heading away from Morgan. Sarah goes after Chuck, who tells her the guy who's going to kill Kuti is in the box with him now. She tells him he should have told her and she could have helped. He says he wanted proof first, but he loves her and needs her to believe in him. She says, "Let's get into that box." Back inside, Casey sits next to Morgan and tells him to stand up and walk out quietly or he'll kill him and drag him out. Morgan's eyes go big and he reaches into his coat. Casey asks what he's reaching for, and Morgan tells him he's been authorized to use this tranq gun, though he doesn't want to. Casey just reaches in and pulls the trigger, so it tranqs Morgan. Then they cuddle. Chuck and Sarah pretend it's a routine CIA sweep in the box, and Chuck frisks the scientist. There are no weapons on him, but Chuck flashes on the Ring intel in his teeth. He punches him and a tooth flies out. Chuck says he was wrong; it's Ring intel in his mouth. He gets down on all fours searching for the tooth. Sarah clearly thinks he's lost it, as does President Kuti. His guards carry Chuck out, which cuts directly to two orderlies at a mental hospital carrying him away from Casey and Sarah as Chuck protests, "Guys! I'm not crazy!"