Charlie is miffed over Alan's planned attendance of Chelsea's birthday party and suffers the indignity of having Jake chauffer him around following a license suspension.

Brick wants his independence from being Frankie's errand boy.

Mike's brother visits for Thanksgiving.

Frankie's parents visit for the 12 Days of Christmas.

Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.

Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group.

Brick wants his independence from being Frankie's errand boy.

Mike's brother visits for Thanksgiving.

Frankie's parents visit for the 12 Days of Christmas.

Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.

Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group.

Frankie and Mike decide to regain control of their lives.

Mike's livid that Frankie mistakenly paid $200 for eye cream.

Brick studies football to watch the Super Bowl with Mike.

Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.

Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town.

Ned chases a story about a local scammer operating through a dating app and realizes he may already have the scoop when he learns Esmeralda was one of his victims; Nicole is full of vengeful glee.

Ned takes over Esmeralda's advertorials and assigns the staff to test products themselves, but Esmeralda retaliates and covers one of Ned’s stories and finds a scandal; Ken turns Adam into a lab rat; Oscar and Adelola compare pain tolerances.

Ron’s teasing makes Joyce question whether her friendship with a pharmaceutical rep is genuine. Alex has trouble letting Serena take on a new task. Matt finds a mentor in Bruce.

At the annual fundraiser, Alex and her husband, Tim, try to have a wild, kid-free night. Ron and Joyce butt heads over hosting duties. Bruce sets out to win this year’s “Dancing with the Caregivers” competition.

A storm causes chaos in the Emergency Department. Alex is torn between an obligation to her husband and her co-workers’ needs. Joyce goes on a spending spree with found money.