"The Big Bang Theory" Season 12 is nearing the finale, but unfortunately for viewers who were looking forward to the next installment, the CBS series won't be airing an episode this week. 

"Big Bang Theory" Season 12, episode 16, titled "The D & D Vortex," won't air this Thursday as the CBS show is taking a break this week. Fans will have to wait another week to see what's next for Penny (Kaley Cuoco), Leonard (Johnny Galecki), Sheldon (Jim Parsons), Amy (Mayim Bialik) and the rest of the gang. "Big Bang Theory" Season 12, episode 16 is set to air on Thursday, Feb. 21 at 8 p.m. EST on CBS, according to TV Guide.

CBS previously released the synopsis for "Big Bang Theory" Season 12, episode 16, revealing that the upcoming installment will focus on a celebrity game of "Dungeons and Dragons" that the gang will try to enter. "The D & D Vortex" will feature several guest stars including "Star Trek" actor William Shatner, "True Blood" alum Joe Manganiello, NBA legend Kareem Abdul-Jabbar and director Kevin Smith.

"The gang finds out Wil Wheaton hosts a celebrity Dungeons and Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith. Deception and betrayal are the path to make it to the one open seat," the synopsis of "Big Bang Theory" Season 12, episode 16 read (via TV Guide).

Cuoco previously released a teaser photo from the filming of the episode on her Instagram page. The snap showed her hugging Shatner, who is wearing a dark pink long-sleeve shirt, on the set of "Big Bang Theory." Cuoco described him as one of her "favorites of all time" in the social media post.

Meanwhile, "Big Bang Theory" recently received a huge honor after getting their longtime set, Stage 25, renamed as "The Big Bang Theory Stage." The CBS series is only the fifth show to be given the recognition, with previous recipients being "Friends," E.R.," "Two and a Half Men," and the "Ellen" talk show.

Co-creator Chuck Lorre recently opened up about the recognition of the series, which will wrap up with 279 episodes when Season 12 ends. 

"You come to work every day to make a good show. We don't think about getting a plaque, but the plaque is extremely rewarding. It makes the show part of the history of the lot," Lorre told USA Today.

Cuoco, who has played the role of Penny since "Big Bang Theory" first aired in 2007, also talked about how it feels to receive the honor and know that the show's days are numbered. She revealed that she is "losing it" and that filming the final episodes has been "really heartbreaking" for her. She also said that getting the plaque was "really special."

Her co-star, Galecki, who plays her onscreen love interest Leonard, also credited the cast and crew's amazing chemistry for the success of the show. "If there was a recipe for the kind of of chemistry that's here on the stage and in the writers room, every show would last 280-some episodes," he said.

big-bang-theory "Big Bang Theory" Season 12 won't air an episode this Thursday. Photo: CBS/Big Bang Theory