The big bang theory
Cast of the Hit CBS show The Big Bang Theory CBS

The Big Bang Theory will take a break this Thursday and return with an all new episode on December 11.

The 11 episode of the Hit CBS comedy is titled, The Clean Room Infiltration, where Amy hosts a traditional Christmas Eve dinner for the gang while the guys are conducting an experiment in the university cleanroom and accidentally let a bird in.

The official synopsis reads: Leonard and Wolowitz nearly come to blows and turn to Raj for help in dealing with a work emergency. Meanwhile, Amy throws an authentic Victorian Christmas party, and Sheldon seeks revenge on her for making him celebrate the holidays.

According to spoilers, Amy announced that she wants to host a traditional English Victorian Christmas for the gang including parlor games, goose, figgy pudding, while Raj tells the gang about his parents' divorce.

On Christmas Eve, Leonard and Howard are in the university cleanroom performing an experiment, when a pigeon flies in the room and they try to get rid of it before the bird soils their work. The entire gang shows up and helps with the pigeon situation.

The report also suggest that, when the geeky genius gang were out on Christmas tree shopping Amy kisses Sheldon in public, which made him unhappy and he decide to avenge it by giving her a Christmas gift. In Sheldon's logic, since she has not gotten him one, that would ruin her Christmas and make her sad.

In the Previous episode, Sheldon records the last episode of Fun with Flags, but later decides to keep the show on. Meanwhile Leonard, Howard and Raj have an important epiphany, while cleaning out professor Roger Abbot's office. And Penny finally tells Bernadette can be rough on people at times, and advises her to mend her ways.

The Clean Room Infiltration will air on Thursday, 11 December 2014.