Leonard's newly-divorced parents and Sheldon's religious mother arrive in town; Wolowitz and Koothrappali are convinced that the government is out to get them.
In the aftermath of Sheldon's mother having an intimate evening with Leonard's father, the gang is left to deal with an uncomfortable morning the next day.
Cameron is desperately trying to find ways to keep his engagement hidden when his sister comes for a visit, but she has her own news that catches him off-guard.
Gemma's sister, Brittany, comes back and claims to have moved past her troublemaking ways; Dave persuades Calvin to join him in completing an escape room.
Dave and Calvin's mission to retrieve Gemma's stolen phone encounters an unexpected development; Malcolm and Marty move their belongings into their new home.
Pups rescue Francois from a water tower geyser; a baby anteater is stuck on a bucking RoboHorse; Pups rescue Ace & her special delivery for Chickaletta's party.
A robotic dinosaur comes to life causing the pups to have to find him, stop him, and then bring him home; the pups shoot their entry into a film festival.
Farmer Yumi's new Robo-Corn Plucker goes haywire; when Daring Danny X dresses as Adventure Bay's mascot, "Bird X," he gets carried away by a couple of eagles.
The Turbots are trapped in the jungle and they try to call the PAW Patrol; Chickaletta has laid an egg, but it rolled away and is heading through town.
An ice floe with three penguins lands in the jungle and the pups must get them back home; Danny is locked out of the lighthouse Turbot left him to look after.
Myrna the Mynah bird leads her new feathered friends astray; Adventure Bay is holding a kid only soapbox derby race, when a mysterious newcomer " shows up.
A criminal mastermind decides to use three orphaned girls to pull off a big heist, but when their love warms his heart, he considers abandoning his plans.
When Spot has puppies, Plankton uses them in one of his schemes; Mr. Krabs is terrified to get his physical, and the Krusty Krab will close if he doesn't pass.
SpongeBob wants to be the first sponge to dive to the ocean's surface; SpongeBob and Squidward accidentally let Plankton steal the Krabby Patty secret formula.
The guys experience tension while working nonstop to complete the task that was delegated to them by the government; Amy and Penny attend a house party.
Sheldon agrees to Amy's proposal for them to try out a "cohabitation experiment" after her apartment is flooded; Howard and Bernadette's baby's gender.
Amy lies to Sheldon about repairs being done to her apartment in an effort to keep her living situation from changing; Penny secretly moves Leonard's items.
Sheldon is determined to persuade Amy that they should procreate; Koothrappali struggles to tell the group about what the woman he is dating does for work.
Sheldon becomes jealous when Bert is awarded the MacArthur Genius Grant; Howard finds a remote control Stephen Hawking action figure he previously designed.
The family heads out to the annual fair; Phil surprises Claire on their 20th wedding anniversary; Gloria signs Jay up to be a fair cop; Haley meets Andy.
Coach Cameron is hyper-focused on winning an upcoming football game and is determined to show no mercy; Claire proves that she's more than the boss's daughter.
Phil ends up in jail after he tricks Luke into taking a dance class; Jay and Gloria are concerned that Manny may be aiming too high when it comes to the ladies.
Calvin is pushed to make a physician's appointment after not going for nearly 10 years and is surprised when his doctor recommends that he get a colonoscopy.
Tina threatens Dave's amateur band when she takes over as lead singer; Marty decides to let his boss crash at his place and quickly regrets his decision.