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The Big Bang Theory (Family Guy)

"The Big Bang Theory"
Family Guy episode
Episode no. Season 9
Episode 16
Directed by Dominic Polcino
Written by David A. Goodman
Production code 8ACX18
Original air date May 8, 2011
Guest appearance(s)
Episode chronology
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Family Guy (season 9)
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"The Big Bang Theory" is the 16th episode of the ninth season of the animated comedy series Family Guy. It aired on Fox in the United States on May 8, 2011. This episode follows Stewie and Brian on their quest to stop Stewie's evil half-brother Bertram from going back in time to the Renaissance period and killing Leonardo da Vinci, who is a part of Stewie's ancestry, in order to prevent Stewie's existence.

The episode was written by David A. Goodman and directed by Dominic Polcino.

After failing to make a good comeback joke against Brian, Stewie goes back in time to redo it, before continually messing around with Brian. Eventually, Brian catches him inside the time machine. In fighting over its controls, they are accidentally transported out of the space-time continuum, where the laws of physics do not apply and where the return pad cannot get them home. Stewie decides to take a risky effort to overload his return pad to bounce them back into the space-time continuum. Stewie later determines that he was the cause of the Big Bang, because the background radiation that created the universe matches the signature of his return pad all due to the temporal predestination paradox causality loop.

When Stewie obtains his plutonium to power the return pad, Bertram learns of the time machine and sneaks into the Griffin house to kill Stewie's ancestor in order to prevent him from ever being born. Unfortunately, as Stewie and Brian discover, by preventing the former from being born, then Stewie would not have been able to start the Big Bang, thereby creating a paradox that begins to wipe everything from existence. Stewie explains this to Brian and says that they will have only one shot at getting back to the present since Bertram took the return pad with him. Brian and Stewie then go back to fifteen minutes before Bertram arrives in the past to stop him from killing Stewie's ancestor, revealed to be Leonardo da Vinci. Stewie guesses that given that he and Bertram share the same father but have different mothers, Leonardo must be an ancestor from Lois's side of the family or else Bertram would be erasing himself as well if he killed Leonardo.


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