Amy: Ignore him. Anyway, I, I spoke to my new lady friend about meeting you all, and she thought it would be easier for her to start with just one. He gets to work with Stephen Hawking. He got it at the mall on clearance. He has been presented with a wonderful opportunity, and I couldn't be happier for him. Howard: It was really nice of you to try to be happy for Leonard. Howard: No, in a couple of weeks, Stephen Hawking's team is sending an expedition to the North Sea to test hydrodynamic simulations of black holes. Howard: Raj, I can't come to the party. I talked you up. It's, it's a farewell for Leonard, so all the attention will be on him. Leonard: So, listen, do you remember when I said the similarities of the equations of general relativity and hydrodynamics suggest you could find the equivalent of Unruh radiation in a large body of water? Leonard: Three, four months. Leonard: Well, it is. Lucy. Lucy: A party? Lucy: Amy wasn't the problem. Lucy: I think I have to go to the bathroom. Lucy: Raj. Lucy: Well, that's two. One of their experimental physicists dropped out, and I recommended you. Penny: Oh, my God, Sheldon the genius is jealous of Leonard. Penny: You're talking to me. Raj: I want to apologize for Amy last night. Raj: No. Raj: Okay. Raj: She is. Raj: What the? Scene: Penny's car, outside the Airport. She hates that. Sheldon: Great. Sheldon: You know, I have to say, Penny, I don't understand why you of all people are encouraging Leonard to do this. Slowly but surely. When would you leave? Your friend was actually up there?
Plan: A: Stephen Hawking; Q: Who plans a North Sea expedition to find the hydrodynamic equivalent of Unruh radiation? A: The team's experimental physicist; Q: Who backs out of the expedition? A: Howard; Q: Who proposes Leonard to be the team's experimental physicist? A: four months; Q: How long does Leonard have to leave Penny? A: a great career opportunity; Q: Why does Penny encourage Leonard to go on the expedition? A: Leonard's career move; Q: What is Sheldon jealous of? A: extended solitude; Q: What is Sheldon afraid of? A: his jealousy; Q: What does Sheldon overcome on Penny's advice? A: the gang; Q: Who wants to meet Lucy? A: Lucy; Q: Who did Raj break up with? A: new people; Q: What does Lucy hate meeting? A: The honor; Q: What does Amy get for meeting Lucy? A: Amy; Q: Who is the newest member of the group? A: the bathroom; Q: Where does Lucy escape to when Raj demands to know about their relationship? A: tears; Q: What does Raj experience when Lucy breaks up with him? A: the airport; Q: Where does Penny drive Leonard to after he breaks up with him? A: the alcohol; Q: What does Penny say is talking to Raj? A: his selective mutism; Q: What has Raj overcome? A: the women; Q: Who does Raj annoy by talking non-stop about Lucy? Summary: Stephen Hawking plans a North Sea expedition to find the hydrodynamic equivalent of Unruh radiation. The team's experimental physicist backs out so Howard proposes Leonard in his place. Though he is reluctant to leave Penny for four months. She encourages Leonard since it is a great career opportunity, whereas Sheldon, jealous of Leonard's career move and afraid of extended solitude, vainly tries to dissuade him. On Penny's advice, Sheldon overcomes his jealousy, later toasting Leonard supportively at his bon voyage party. Meanwhile the gang wants to meet Lucy, who hates meeting new people, so Raj suggests she first meet just one of them. The honor falls to Amy, the newest of the group. Amy handles Lucy well, but when Raj demands to know the status of their relationship, Lucy escapes to the bathroom. Later, Lucy reluctantly agrees to go to Leonard's party, but instead texts Raj there to break up with him, reducing him to tears. Later, after driving Leonard to the airport, Penny visits Raj to console him. When he says he is unlovable, Penny says the alcohol is talking - yet Raj has been sober since Lucy broke up with him. Both are amazed and happy to realize Raj has finally overcome his selective mutism. The episode ends with Raj annoying the women by talking non-stop about Lucy.