Sophie dates an older man, which encourages Jesse, Sid, and Charlie to take better care of themselves. Sophie and Val battle over who gets the apartment for date night.

A new powder supplement seems to have instant benefits for the group, but Freddie’s devotion to the product puts his future at risk after Carly discovers it’s a midlevel marketing…

Carly’s nemesis Nevel invites the group to his wedding, but Carly suspects that the bride isn’t what she claims to be. Harper and Spencer wager on who can collect the…

Carly makes plans to spend her birthday alone in an attempt to stave off her dreaded birthday curse, but Spencer has different plans. Freddie tries to recapture his youth. Harper’s…

Adam has trouble helping Katie prepare for her driving test. Also, Don turns to Lowell for help romancing Marcy.

Adam and Andi attempt to spice up their social life by making new friends.

When Max decides to head to Los Angeles to win back Randy, she and Caroline embark on a cross-country road trip with Han at the wheel. Also, while Han and…

When Max reconnects with an old friend, Caroline’s jealousy inspires her to try to make some new friends of her own.

Despite an injury, Christy refuses to admit that she needs Bonnie’s help; Luke asks Baxter for advice about fatherhood.

After Leonard, Sheldon and Wolowitz celebrate the completion of the top secret air force project, they are met with an unpleasant surprise. Also, Amy is offered a summer position as…

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…

Personalities collide when Sheldon and Leonard’s mothers finally meet. Meanwhile, Howard finally decides to “man up” and do his fair share of the housework – but not without a little…

Wolowitz questions his engineering abilities when he and Sheldon can’t get a toy drone to fly. Meanwhile, a cancelled flight nearly prevents Leonard from giving the commencement address at his…

When Leonard gets minor surgery on his nose, Sheldon is the one in need of sympathy. Meanwhile, Raj’s parents’ impending divorce causes Howard and Bernadette to work on their own…

While Raj is wracked with guilt when he tries to date two women at once, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is…

Amy and Sheldon’s relationship takes a surprising turn during a game of “Dungeons & Dragons”; Lucy and Koothrappali have an awkward date.

Leonard must face his fears after being contacted by his high school tormentor.

Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.