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

The Big Bang Theory season 10 returns with all new episode this Thursday, where Sheldon tries to split his time between his girlfriend and his friends, struggles to work on two separate projects at once.

Click here to watch the premiere episode via live stream online. You can also click here to watch the episode online (only in the US). Episode 20 is titled, The Recollection Dissipation, which airs on 6 April at 8pm EST on CBS Network. The official synopsis 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.

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In the episode, the theoretical physicist works himself sick and wakes up with no recollection of where he was and what he did in the last few hours. Also, Bernadette struggles with the fact that she has to manage work and her baby, as her maternity leave ends.

Meanwhile, CBS also released a photo montage for episode 20, teasing what fans can expect in the chapter. The first photo shows a dishevelled Sheldon and it questions, "What happens when Sheldon tries to work on two projects at once?"

Then we see photos of Leonard and Amy, as they realise their meeting with Sheldon would overlap, while Rajesh – who is now residing with Leonard – and Penny are trying to break tensions between them with some light banter.

The next slide shows Sheldon and Penny in the laundry room and the genius speaks with his good friend about his current predicament.

Penny was of no help in the next photo as we can see Sheldon under the weather, but he refuses to admit that he is unwell. The next image shows the entire gang at Leonard's apartment, as Sheldon is waking up from a dream and tries to recount the unpleasant experience.

An earlier promo gave fans a glimpse into what might have happened to Sheldon and it suggested that he had gone to a bar.

It remains to be seen, whether Sheldon would remember what he did the previous night and how he will manage to work with both Amy and Leonard simultaneously? To know more keep watching TBBT season 10 on Thursday nights on CBS.