Sheldon (Jim Parsons) and Leonard (Johnny Galecki) are slated to defend themselves against Internet trolls in the upcoming episode of CBS's The Big Bang Theory.

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CBS has released a plot synopsis for the next episode of The Big Bang Theory, which is humorously titled The Troll Manifestation.

"When an online bully destroys Leonard and Sheldon's physics paper, the guys band together to take him down," the new synopsis reads.

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Going into further detail, the synopsis says, "After Leonard and Sheldon co-publish a physics paper, they must defend themselves against criticism from an online bully. Also, girls' night finds Penny [Kaley Cuoco-Sweeting], Amy [Mayim Bialik] and Bernadette [Melissa Rauch] confronting embarrassing moments from their past."

There is no word on where Howard (Simon Helberg) and Kunal Nayyar (Raj) will be in this episode, though they are obviously more likely to be involved in Sheldon and Leonard's storyline involving the online troll.

Now in its eighth season, The Big Bang Theory remains the most popular sitcom on television. Parsons recently spoke on the success of the series, chalking it up to show runner Chuck Lorre's style.

"Chuck was a musician before he was a writer, and one thing all of these shows have in common is a rhythm," Parsons said, per Entertainment Weekly. "These shows [perform strongly when in repeats]. You've seen them three times, but it's like a pop song - its got rhythm ... He'll come in when were rehearsing and clean it up."

The Big Bang Theory airs Thursdays at 8 p.m. ET/PT on CBS.

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