After Sheldon disassembles the refrigerator to silence an obnoxious hum, he gets a paper route to pay for the repairs.
When Sheldon becomes envious of Dr. Sturgis' relationship with Paige, another child prodigy, Meemaw steps in.
When a tragedy in the neighborhood tests Mary's faith, Sheldon becomes an unusual friend.
When Sheldon's father tells him to keep a secret from Mary, the burden of hiding the truth pushes him to his first sleepover at Tam's.
Dr. Sturgis recommends Sheldon and Missy for a university twin research study, and Mary is worried about its possible effects on the kids.
Mary argues with Sheldon's acting instructor about preparations for a church Halloween benefit. Georgie also develops feelings for a rebellious adolescent girl who Sheldon tutors.
Sheldon runs into problems at the science museum with Paige. As George Sr. is obliged to play therapist to Paige's squabbling parents, Mary, Georgie, and Missy lend Meemaw a hand in a garage sale.
As Sheldon and Meemaw's lives are taken over by a video game, George Sr. feels envious when Georgie interacts with Herschel at the car shop.
Sheldon does a research on his family for a psychology study. The Thanksgiving dinner becomes a family dispute when Georgie Sr. is given a job in Oklahoma.
After realizing that individuals with underdeveloped childhoods might become social misfits, Sheldon attempts to behave like a child. Meemaw shows Dr. Sturgis how to drive, which leads to testing their relationship.
As Sheldon conducts an experiment on Missy, Georgie attends Mary's bible study in order to hang out with his crush, Veronica.
Sheldon becomes the worst patient after staying a few days in the hospital. Missy experiences what it might be like if she didn't have a twin.
Sheldon makes an attempt to construct a nuclear reactor. Georgie is upset when he finds out that Veronica is in a relationship.
As Sheldon takes advantage of his new relationship with the school bully to control Georgie, Missy also takes Meemaw's makeup for her school picture day.
Sheldon and Dr. Sturgis have their first quarrel together. Mary fills in for Pastor Jeff while he is off sick.
Sheldon's boycott of his beloved bread company goes too far. Georgie tries to support Veronica following her breakup with her boyfriend.
Sheldon is motivated by his role model Albert Einstein and attempts to learn to play the violin. Mary suspects that she is pregnant.
As Sheldon spends the weekend with Dr. Sturgis to experience what life is like in college, a lonely Mary tries to interact with the Coopers while Sheldon is away.
Sheldon runs for class presidency after becoming dissatisfied with the allocation of school finances to football rather than academics.
Georgie is overjoyed when Veronica visits the Coopers for a few days. Meemaw and Dr. Sturgis celebrate their one-year anniversary.
As the Coopers assist Pastor Jeff at a difficult period in his marriage, Mary brings Sheldon to work for a day and he gets a lot of donations from church members.
Sheldon brings the entire school to the Nobel Prize announcement celebration. Meemaw also uncovers more about Dr. Sturgis' history, and Georgie's yearning for cable TV leads to a confrontation with George Sr.