Lights off
Lights on

Summary

Leonard and Priya are a couple and since she lives with Raj, Leonard and Howard decide to have dinner there instead of the normal venue which disturbs Sheldon who prefers their place. Sheldon leaves and stops by the Cheesecake Factory where Penny tells him he has to accept that the gang will be hanging out at Raj's place more often. Amy tells him that Leonard is the nucleus of their social group and not Sheldon. As a result, he sets up a new group consisting of Barry Kripke, Stuart, Zack and LeVar Burton (whom he tweeted) with him as the nucleus. Sheldon's plans are dismissed by the others in favor of Zack's dating stories and getting drunk and singing karaoke. Naturally, Sheldon doesn't like that very much, so he decides to go back to his old friends, who, in the meantime, realized that they actually...

Episode Guide