Complex sentence: When Peter and Chris interrupt Stewie's TV time, the angry baby goes back in time to break up Peter and Lois so he's never conceived, but is shocked when he is reborn into a "Downton Abbey"-esque British household.
Split into simpler sentences: When Peter and Chris interrupt Stewie's TV time, the angry baby goes back in time to break up Peter and Lois so he's never conceived. Stewie is shocked when he is reborn into a "Downton Abbey"-esque British household.