When Grover joins Calvin's youth basketball team, Gemma finds herself at odds with some of her neighbor's coaching methods; Tina and Marty are forced to confront a long-buried Butler family secret.

When Calvin decides to film a local TV commercial for his business, he enlists Dave, Tina and Marty to help; Malcolm considers making a grand gesture when his girlfriend, Sofia, is offered her dream job abroad.

When Tina decides it's time to make home improvements, Dave volunteers to repaint the Butler house, violating Calvin's "man code" and setting off a chain of events that impacts both families.

When Grover gets into a fight with a bully at school, Gemma is torn between her role as principal and wanting to protect her son; Calvin encourages Marty to stand up to his own bully, only to be shocked when he learns who it is.

Dave is eager to take on a bigger role in the community and prove himself to Calvin; Calvin's reaction makes it clear that, while the relationship between the two families has grown, the friendship between Calvin and Dave needs more time.

A tight-knit group of friends and family band together to help Wade embrace his new normal in the wake of the loss of his wife a year earlier. As a sometimes ill-equipped but always devoted single parent to his two adolescent daughters, he is taking the major step of dating again. To Wade's amazement, he's a hot commodity with women, and his friends explain that he's the perfect single guy: employed, attractive and with a proven track record of commitment. With his daughters and best friends rooting him on and hoping he'll find happiness, Wade and his healing heart are ready to try life and love again.

For most parents, parenting is hard, but for Kay, a caustic, take-no-prisoners casino pit boss, and husband Mike, a handyman and uncultivated guy's guy, parenting may as well be advanced calculus. Dealing with the demands and egos of three high-IQ children would be tricky for any parent, but it's especially hazardous for two working stiffs who barely got through high school. Mike and Kay are committed to bringing some normalcy to their kids' hectic, unconventional childhoods, but these geniuses don't make it easy.

At age 50, Carol Kenney has raised her children, gotten divorced and retired from teaching. Instead of kicking up her heels and taking a well-earned break, she decides it's time to start over, committing to the pursuit of her dream of becoming a doctor. As the oldest medical intern -- by a lot -- she must sink or swim with peers who are half her age. Luckily for her, her enthusiasm, perspective and even her age may be exactly what makes her second act a great success.

It's 1989 and 9-year-old Sheldon Cooper has skipped four grades to start high school along with his less-intellectual older brother. As he struggles to be understood by his family, classmates and neighbors, his mother arms him with the best tool she can come up with: reminding bullies his dad is the football coach and his brother is on the team. His twin sister doesn't share his exceptional mind, but she has a much clearer vision of what life has in store for the young genius. Jim Parsons, who plays the adult version of Sheldon on "The Big Bang Theory," narrates.