News of the tornado reaches Sheldon and Mary in Germany. Also, with the Cooper house in chaos, Missy steps up.

Sheldon realizes he is the weakest student in his class; Meemaw is looking to expand her gambling business.

Sheldon explores Germany behind Mary's back, Missy attempts to pull a fast one on George Sr. and Meemaw and Dale adjust to living together.

Missy steps up, Mary has a surprise for George, and Sheldon finds his dorm occupied.

Sheldon helps his roommate try to beat the stock market, Missy and Billy Sparks throw a party, and Mary finds a new church.

Georgie and Mandy's wedding plans pit Mary against Mandy's mom, Audrey, with baby CeeCee caught in the middle.

Georgie and Mandy get married! Meanwhile, Meemaw's gambling room gets raided.

Sheldon studies to be Meemaw's lawyer when she is put on house arrest, and the Coopers have a plumbing emergency.

Sheldon's published paper leads to a frenzy of grad school recruiting, and Georgie tries to speak more properly in front of his daughter.

Connie gets assigned a tough probation officer, and Georgie takes marriage advice from his father-in-law.

George Sr. is worried that Mary wants another baby and gets a vasectomy behind her back. Meanwhile, Drs. Linkletter and Sturgis go to Sheldon for science tutoring.

George Sr. gets an exciting job offer, and Sheldon prepares for his move to California.

Sheldon leaves East Texas for the California Institute of Technology following the death of his father.