Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy; Penny has a difficult time connecting with Leonard's vising mother.
Sheldon visits CalTech for the very first time. Also Georgie is furious when Mary listens in on a phone call with his girlfriend. And Meemaw tries to cheer up a jealous Missy.
Lydia deals with being in the spotlight while working on a celebrity murder case; Sammy goes out on patrol; John and Ben are frustrated over a security detail.
Gibbs and the team investigate the altercation that caused injuries to Sen. John Phillips' son; Torres and Sloane must protect the senator as they travel from Afghanistan back to the States.