"Georgie & Mandy’s First Marriage" is the latest spinoff series of "The Big Bang Theory" following the major success of its first spinoff series "Young Sheldon."

Emily Osment and Montana Jordan return for "Georgie and Mandy's First Marriage," following the young couple as they navigate marriage and family life in Texas, premiering Thursday at 8 p.m. ET on CBS News.

The new series, “Georgie & Mandy’s First Marriage” stars Sheldon’s older brother, his wife and their daughter.

Steve Holland explains exactly when Georgie and Mandy's First Marriage takes place relative to Young Sheldon and The Big Bang Theory.

"I like laughin' shows," Georgie Cooper (Montana Jordan) declares in the opening scene of "Georgie & Mandy's First Marriage." "Some shows you can hear people laughin', and some you can't. ‘The Wonder Years' - no one's laughin'.

In order for the show to work, Sheldon Cooper — whether it's Jim Parsons or Iain Armitage — can't be in the picture if Big Bang Theory lore counts.

The debut episode of Young Sheldon spinoff Georgie & Mandy's First Marriage will feature some familiar faces. Annie Potts, who played Connie Tucker, Sheldon and his siblings' Meemaw, and Zoe Perry, the actress behind Mary Cooper,

The Big Bang Theory universe is expanding again — while also returning to its sitcom roots — with Young Sheldon spinoff Georgie & Mandy’s First Marriage (premiering Thursday, Oct. 17 at 8/7c on CBS).