Howard is kicked out of his house by Bernadette and he has no place to crash. He takes Sheldon`s old room in Leonard and Penny`s apartment.

Sheldon: Penny, was your PMS normal?

Penny: What the hell?

Sheldon: I am just keeping track if you are pregnant or not since Leonard stopped buying flavoured protection from the mall.

Penny: I propose a new topic of conversation. So, Sheldon you believe in parallel universe and alternate dimension. In which version do you get killed?

Howard: Where did that come from?

Leonard: Let me rephrase it! In which version do you die younger?

Raj: I believe in some alternate parallel world version, Sheldon is being stabbed in the back right now.

Penny: I wish it was this version.

Leonard: I like to believe that we don’t exist in the other versions.

Raj: Karma is a bitch.

Sheldon: Excuse me! In all the possible versions of mine, Sheldon gets killed by Sheldon when the humanity gets its greatest gift from Sheldon – which is…? Sheldon!

Raj: Well, instead of alternate dimensions or parallel universes I would like to think that life is a play and that we are playing the roles as written by our writer or God.

Sheldon: Hmm… The alternate dimension is close to the Hinduic theory of Karma.

Raj: Maybe in my past life or in an alternate dimension or a parallel universe I was a ladies man and that was why I am single in this life.

Howard: Or maybe you were a jerk around women and this life rewarded you with a singles life.

Raj: Oh really? How would your past life have been like?

Penny: Definitely not a doctor!

Sheldon: Well, I like to think that maybe I am a time traveller from the future.

Leonard: I always thought that you were an alien robot left here.

Howard: With a manual.

Raj: And to keep our karma in check.

Penny: Does he have a power off button?

Sheldon is missing and the gang frantically search for him.

Amy knocks on Leonard and Penny’s door

Amy: Leonard and Penny?

Penny: Come in!

Amy: Is Sheldon here?

Leonard: Hey, what`s up?

Amy: Sheldon`s phone and his belongings are here. He is gone. He didn’t tell me anything.

Leonard: Has he left a note or anything?

Amy: No!

Leonard: I will check with Raj and Howard. Maybe he is with any of them.

(Leonard calls Howard)

Leonard: Hey, buddy! Is Sheldon there?

Howard: No! What happened? Is everything alright?

Leonard: It’s Sheldon! He is not here. His phone is here but he is been missing for a long time and Amy is worried.

Howard: Did you see any spaceship come and abduct him?

Leonard: Wait… Hold the line… I am getting another call… Hello, Leonard here. Oh, yea. Is it? No.. He is not dangerous… He is kind of crazy… No… Not mental crazy… The guy is just out of the box crazy… Really? Maybe mental crazy… Okay… I’ll come and pick him up…

Leonard, Amy, Penny drive to the Children`s Park

Amy: Sheldon, what are you doing here? You know that you could catch the flu at places like these!

Sheldon: I had my containment suit handy.

Leonard: What were you doing up here all alone?

Sheldon: I wanted to get inspiration.

Leonard: For what?

Sheldon: I am working on a book.

Leonard: Book? Like a science book?

Sheldon: I am writing an autobiography of my young age.

Penny: Wait… Haven’t you written that already?

Sheldon: Penny, journal writing is different from autobiography. A journal is a book with important events, dates, notes, thoughts whereas an autobiography is a complete description of our life events.

Amy: So, why don’t you do that in our apartment or ask me to the park?

Sheldon: Amy, as much as I appreciate your concern I would like to spend some alone time to focus on all the important events of my life.

Penny: Am I in your autobiography?

Sheldon: In the second part of my autobiography, yes.

Penny: Aww! Thank you!

Leonard: There`s two parts?

Sheldon: Yes! The first part is about my childhood. It is titled 'Young Sheldon'.

Amy: So, do you want us to leave you alone?

Sheldon: Yes, please.

Amy: Call me when you are done and I`ll come pick you up.

Sheldon: Alright!

Penny: Bye, Sheldon!

The next day Leonard, Howard and Raj meet at the university during lunch.

Howard: What’s up with Sheldon?

Leonard: Oh, he is just writing his memoir.

Howard: And, that makes him cut off from the world?

Leonard: Yes!

Howard: Why didn’t we know that before? We could have put him into auto-bio mode.

Leonard, Howard and Raj laugh.