Big Bang Theory season 10
Jim Parsons as Sheldon Copper in The Big Bang Theory CBS

The Big Bang Theory will take a page from The Hangover movie, as Sheldon forgets where he was and what he did the previous night in the upcoming episode of season 10 titled The Recollection Dissipation.

A new promo for TBBT season 10 episode 20, shows the gang trying to help Sheldon recall the events of the previous night. The clip opens with Amy waking up Sheldon, who is seen sleeping on the couch in Leonard and Penny's apartment.

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"Sheldon! Are you okay?" asks Amy, to which a confused Sheldon replies, "What's going on? How did I get here?" We see Leonard, Penny and Raj sitting near the physicist, trying to figure out what happened to their friend.

Leonard says, "We came home from work and we found you." A dazed Sheldon asks, "What time is it?" Penny tells him it's 9'O clock. "What happened to 8, and 7 and all the other O'clocks?' asks the genius scientist.

"Where in the world was Sheldon Cooper?" asks the promo's voice-over. Next we hear Sheldon say, "My pants are missing, I don't remember anything? Penny, this is your youth — what do I do?"

"Follow the clues" says the voice-over, as Sheldon, Leonard and Raj are seen entering a bar. "Does this place look familiar?"asks Raj and Sheldon replies it's hard to say. Then the crowd cheers and Sheldon says, "It's getting clearer," hinting that he did visit the place the previous night.

The official synopsis for the chapter reads as follows:

Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day. Also, Bernadette is nearing the end of her maternity leave and must return to work, on The Big Bang Theory.

To know what Sheldon was up to the previous night, do not miss The Big Bang Theory season 10 episode 20, airing this Thursday on 6 April at 8pm EST.