In this week’s Big Bang Theory, Sheldon, Leonard, and Penny return from a trip at the container store. When they reach the apartment, Sheldon questions why Leonard is bringing his bins to Penny’s apartment. They tell Sheldon it makes sense that they live together since they are married now. This greatly upsets Sheldon.
Sheldon goes to Bernadette for "female comfort and encouragement,” since he is mad at Penny and still broken up with Amy. Bernadette tells Sheldon maybe he now has the opportunity to find someone better than Leonard to live with. That is when Stuart walks down the stairs. Bernadette suggests that they should be roommates. Stuart shuts this idea down immediately.
In typical Sheldon fashion, Leonard is given paper work to officially end their time as roommates. Sheldon takes the situation surprisingly well.
Sheldon starts interviewing new roommates but all 11 of them walk out. Sheldon asks Amy to move in, but she shoots him down. Sheldon is upset that he cares so much. He blames his friends for giving him feelings.
When Leonard and Penny head to go out to dinner, they run into Sheldon. They invite him to dinner but he declines, saying that he is going to live his life the way he did in 2003 before he met Leonard. When they get back to the apartment they find that Sheldon has removed most of the furniture. He is having a lot of trouble feeling like everyone is leaving him. He knows that eventually he will see them less and they will want to move into a house. Feeling bad, Penny agrees that they will go back to spending their time between the two apartments. This prompts Sheldon to declare that he needs to draw up a new roommate agreement.
In the sub plot, Stuart is looking for someone to play music at the comic book store. Howard and Raj decide that they should make a band and play Filk music, which is folk music with a sci-fi theme.
At Raj’s, they try to write music involving Thor and Indiana Jones. They agree it is a masterpiece but when Raj later plays it for Emily she doesn’t agree. She says that you can’t dance to it. Raj agrees and goes to tell Howard. He quickly figures out that Raj must have let Emily listen to it. Howard gets mad and says his girlfriend is breaking up their band.
They end up playing the song at the comic book store. As they finish, Stuart shouts that they should play something everyone could dance to.