"The Big Bang Theory" will be premiering its Season 6 fall finale that's appropriately titled "The Santa Simulation" on Thursday night.

CBS released a clip of the Christmas themed episode, which features Sheldon getting some longtime Christmas grievances off his chest while Koothrappali accompanies the girls for a night out.

The network posted the following synopsis elaborating on the episode:

"Sheldon revisits some Christmas memories during a game of Dungeons and Dragons, while Penny, Bernadette and Amy try to find a girl for Koothrappali when he joins the girls for ladies' night."

Following the episode, the series will be going on a brief hiatus until it picks up again on Jan. 3 with "The Egg Salad Equivalency."

Next year's highly anticipated installment will mark the return of Sheldon's assistant Alex (Margo Harshman) and "Southland's" Regina King, will be on board and reunite with fellow USO tour members Johnny Galecki (Leonard) and showrunner Steve Molaro.

KIng will play the role of Mrs. Davis, the head of human resources at the university. She will have the unique honor of questioning Sheldon over "an uncomfortable situation" that has been voiced by his assistant.

Harshman's role is seemingly the character that is being spoken about in the episode's original synopsis, which reads:

"Sheldon gets accused of sexual harassment at the University and winds up getting Leonard, Raj and Wolowitz in trouble."

Carter is speculating that the respective description may insinuate the end of the Alex character, as it would be very hard to fathom her sticking around amid the described scenario with her boss.

In other news on the "Big Bang Theory" front, the show has been nominated for Screen Actors Guild Awards in the "Best Ensemble Comedy" category. Jim Parson (Sheldon) is also being considered for the "Best Male Actor in a Comedy Series" award.

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