Fans of "The Big Bang Theory" will have to wait until April for the next new episode to air on CBS. However, it promises to be hilarious as Sheldon and Leonard make an attempt to sneak onto George Lucas' Skywalker Ranch, reports The Hollywood Hills.

The April 2 episode, which is aptly titled "The Skywalker Incursion," will focus on Sheldon and Leonard as they sneak their way into meeting one of their idols.

According to Carter Matt, the synopsis for the episode reads as follows:

"When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Dr. Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong."

Guest stars include actor Tate Ellington as Mitchell and actors Michael Dempsey and Mark Barrett, who will play security guards.

Following the premiere of "The Skywalker Incursion," TV viewers will be introduced to Howard Wolowitz's long-lost half-brother in the April 9 episode. Entertainment Weekly  revealed that Wolowitz's younger brother, Josh, will be played by "Victorious" star Matt Bennett in the episode, which is titled "The Fortification Implementation." 

Josh, who is Howard's half-brother from his father's side, unexpectedly comes to town and shows up on his doorstep. Howard's estranged father, however, has not yet appeared on the series.

Bennett has also starred in "Bridesmaids" and "iCarly." 

The last episode of "The Big Bang Theory," "The Leftover Thermalization," paid tribute to late actress Carol Ann Susi, who played the voice role of Howard's nagging mother on the show before she died of cancer last November.

Season 8, Episode 19 of "The Big Bang Theory," "The Skywalker Incursion," will air on Thursday, April 2 on CBS.