As chaos ensues, Sheldon tries to figure out how to reverse the effects of his device. With the help of his friends, they manage to fix the device and stop the wishes from coming true.
Sheldon, terrified of needles, refuses a chicken pox vaccine. When an outbreak hits Medford, he naturally contracts the virus. Mary confines him to bed rest. Meanwhile, George Sr. tries to bond with Missy over baseball, and Meemaw faces a financial dilemma with her gambling winnings. young sheldon s03e08 vp3