YoungSheldon is an American comedy series and a prequel to The Big Bang Theory. According to relevant public information, the play tells the life of the protagonist sheldon cooper when he was 18 years old, mainly about his stories with his family and friends, and shows his intelligent, interesting, eccentric and unusual personality. Ba will always be Sheldon's father and a high school football coach. He played an important role in Sheldon's education and growth. The play has been broadcast on CBS since 20 17 and has been broadcast for four seasons.