Fans are still having a hard time dealing with the fact that this year will be the final one for CBS’ long-running The Big Bang Theory, largely due to the fact that Jim Parsons is ready to move on to other things. So with that in mind, there’s no reason the show shouldn’t start to go out with a bang (yes, we know what we did there), and that will come in the form of a crossover with cast members from the prequel series, Young Sheldon.

Details are virtually non-existent beyond the fact that Iain Armitage, who plays the young Sheldon Cooper; Lance Barber, who plays Sheldon’s dad, George Cooper, Sr., and Montana Jordan, best known as Sheldon’s younger brother, Georgie, will be appearing in the episode. The assumption is this is going to be a dream in the same way that Sheldon has a tendency to bring Bob Newhart’s Professor Proton, dressed as Jedi warrior Obi-Wan Kenobi, to life in his subconscious whenever he’s got a particularly trying problem.

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(Photo by Tommaso Boddi/WireImage)

One would imagine that this will be an opportunity to not only play up the laughs but get a bit sentimental as well considering that episodes of The Big Bang Theory have established that George, Sr. had previously died of a heart attack. There was also an estrangement between Sheldon and Georgie, the two of them only reconciling at the end of last season as Sheldon and Amy got married.

While the conclusion of its 12th season will be the end of The Big Bang Theory, the belief is that Young Sheldon will continue. If so, bearing in mind that Jim is not only a producer on that show, but provides the narration, if the series gets renewed for a third season he is expected to continue in both capacities. If so, then the original version of Sheldon Cooper may be out of sight, but he won’t be out of mind.