After the gang loses at paintball, they run into Penny who invites them to her Halloween party. As the party is costumed, the gang is extremely excited. Initially, all four of them dress up as the Flash, but they all agree to change into different costumes.
Leonard asks Sheldon not to embarrass him at the party as he feels this party could be a milestone in his relationship with Penny interacting with her social circle.
The gang arrives at Penny’s apartment while everyone else arrives much later. Leonard is Frodo from Lord of the Rings, Sheldon is the Doppler Effect (which no one understands), Howard is Robin Hood (though everybody thinks he’s Peter Pan) and Raj is the Norse God Thor (not the Marvel Comics character).
After the party starts, the guys seem left out just sitting on Penny’s couch. Howard spots a girl and manages to creep her out. As Leonard wants to talk to Penny’s friends, but is afraid to do so and asks Sheldon to be his wingman. A girl named Cheryl approaches Raj and talks to him asking him how “wasted” she is, but he still is unable to respond.
Penny’s ex-boyfriend Kurt arrives at the party and she greets him warmly. Leonard decides to confront Kurt. After saying Kurt is less evolved than himself and Kurt seems to understand Leonard, Kurt lifts Leonard up intimidatingly. Penny tells Kurt to stop who explains that he was just having fun with his little buddy. Leonard is a little shaken up so he and Sheldon leave the party. Penny feels bad about what happened so she stops by at Leonard’s apartment. Penny gets emotional and claims that she invited Kurt because he was all apologetic, but she can’t go back to her party and wonders what is wrong with her. Leonard says that there is nothing wrong and that she is perfect.
Penny then kisses Leonard. He stops her advances and inquires if she kissed him because of how much alcohol she has had. Penny tells him that he’s really smart and Leonard sarcastically replies that he’s a frickin’ genius (for stopping Penny). Penny wonders why all guys couldn’t be like him. Leonard replies that if all guys were like him, the world wouldn’t survive. When Penny leaves, she kisses him again. This time, Kurt saw them and Leonard stands his ground and quickly shuts and locks the door behind him.
Later, Howard asks if Sheldon has seen Raj. Raj is seen having just finished having sex with Cheryl (the girl from the party), despite having not said a word the entire time. Cheryl describes Raj as such a good listener.
The Big Bang Theory / Season 1
The Middle Earth Paradigm / Episode #6
Originally Aired: 10/29/07