In this prequel to The Big Bang Theory centered on the youth of Sheldon Cooper (Iain Armitage).
Sheldon Cooper, a young prodigy living in East Texas, joins his hometown high school at the age of nine. Sheldon is a gifted high achiever, both exceptionally intelligent and highly sensitive to his environment.
He lives with his parents, George Cooper Sr. and Mary Cooper, twin sister Melissa "Missy" Cooper and brother George "Georgie" Cooper Jr.
The series is narrated by adult Sheldon (Jim Parsons).