Morgan arrives home to tell Chuck the exciting news of him quitting but he notices Chuck's holding a glass of whiskey with a gaming console in his lap. He's all, "Hold on. Something's going on here. Oh, are you mixing gaming with whiskey?" Chuck says Sarah's leaving with the other guy (the titular other guy). Chuck tries to drink more as Morgan tries to take away the whiskey. Chuck says he's already over the edge, but Morgan says he's not going to let it get to the point where Chuck quotes liberally from John Hughes and things go dark. Chuck flashes and then we cut to Morgan tied up on floor muttering as Chuck listens to If You Leave, while holding a guitar on the floor. He starts the John Hughes quoting: "She said she couldn't be with someone who didn't believe in her. Well, I believed in her. I just didn't believe in me." Morgan tells Chuck he's misquoting and ruining Pretty in Pink for him. He begs Chuck to stop this now, and he'll forget it happened. Thankfully, Sarah comes in and asks what the hell's happening. Morgan tells her this is all because Chuck found out Sarah is leaving with Agent Superman. He continues that Chuck's eaten a whole carton of ice cream and drank a lot of whiskey. Sarah unties Morgan and asks him to leave them. Morgan says he forgives Chuck, then turns off the music as he screams, "Great. Now I hate this song."
When they're alone, Chuck says he knows what he looks like, but the ice cream sobered him up. She says it's okay, but he says it's not because he thought Agent Superman was bad and he could save her and they could be together. She tells him Agent Superman's a good spy, and Chuck's all, "I get it already. Shaw's amazing." He says them running off together to save the world is great news for the world, but he realized that he hasn't asked Sarah a very important question. He asks her now: "Do you love me?" Strummy music plays as Sarah hesitates. Chuck starts babbling about how he's sitting in his underwear holding a plastic guitar and probably making a complete fool of himself. Sarah says yes, and Chuck thinks she means yes, he's making a fool of himself, but she clarifies that she fell for him a long time ago, after he fixed her phone and before he started diffusing bombs. She leans in and kisses him. For real. Finally. And it's pretty awesome. She tells him that Casey told her about the Red Test, that he couldn't do it, which means he's still the same Chuck: "You're still my Chuck." He wants to clean up, but she says there's no time because of their new mission: a three-man op with Agent Superman, who thinks he's found Ring headquarters. Morgan, who's been listening the whole time, comes out and says if there's a mission, he's totally on it, since he's Chuck's assistant. He gets Chuck some coffee.