After Sheldon dismantles the refrigerator to stop an annoying hum, he gets a paper route to pay for the repairs.
When Dr. Sturgis bonds with Paige, another 10-year-old genius, Sheldon’s jealousy leads Meemaw to intervene. Mary invites Paige’s family over for a play date.
When Mary’s faith is shaken by a tragedy in the community, Sheldon becomes an unlikely ally.
When George Sr. asks Sheldon to keep a secret from Mary, the stress of not being honest drives Sheldon to hideout at Tam’s for his first sleepover.
When Dr. Sturgis recommends Sheldon and Missy for a university research study on twins, Mary is unhappy when the test results go to Sheldon's head.
Mary clashes with Sheldon's drama teacher over plans for a Halloween fundraiser for the church. Georgie falls for a rebellious teenage girl whom Sheldon is tutoring.
Sheldon gets into trouble with fellow child genius, Paige at the science museum. George Sr. is forced to play therapist to Paige’s bickering parents. Mary, Georgie and Missy help Meemaw with a garage sale.
A video game takes over Sheldon and Meemaw’s life. George Sr. is jealous when Georgie bonds with Herschel at the auto shop.
Sheldon studies his family for a psychology project. Thanksgiving dinner turns into a family fight when George Sr. is offered a job in Oklahoma.
When Sheldon learns that people with stunted childhoods can turn into social outcasts, he tries to act. Meemaw and Dr. Sturgis' relationship is tested when she teaches him how to drive.
Sheldon experiments on Missy, and Georgie joins Mary’s bible study to spend more time with his crush, Veronica.
When Sheldon has to spend a few days in the hospital, he turns into the world’s worst patient. Also, Missy gets a taste of what life would be like without her twin.
Sheldon attempts to build a nuclear reactor. Also, a university cocktail party gets heated when Dr. Sturgis’ colleague, Dr. Linkletter, flirts with Meemaw, and Georgie is heartbroken when he learns Veronica has a boyfriend.
Sheldon uses his new friendship with the school bully to boss Georgie around. Also, Missy steals Meemaw’s makeup for picture day.