'The Big Bang Theory' season 10 spoilers: Penny's family arrives in the premiere episode

Penny and Leonard's mom Beverly CBS

"The Big Bang Theory" season 10 will get right into the action and revelations following the redo wedding of Penny (Kaley Cuoco) and Leonard (Johnny Galecki), which has been a disaster so far.

[Spoiler Alert! Plot spoilers about the new season ahead. Read on if you want to know what happens before the new season officially airs.

As per new leaks, "The Big Bang Theory" season 10 premiere will be titled "The Conjugal Conjecture." Here, it will be revealed that Sheldon's (Jim Parsons) mother and Leonard's father indeed got a bit too cozy.

More than that, it will also be shown that they the pair have started seeing each other. This will turn the wedding into a bigger catastrophe especially after Beverly (Christine Baranski) learns about what Alfred (Judd Hirsch) and Mary (Laurie Metcalf) were doing.

While the new couple developed romantic feelings for each other, they clarify that they did not hook up. This is revealed after Sheldon confronts them in the most awkward fashion.

Another biggie in "The Big Bang Theory" season 10 opener is that Penny's family will finally be introduced. Her mom Susan (Katey Sagal) and her brother Randall (Jack McBrayer) will be on the wedding.

Penny is actually the one who picks them up from the airport. Fans can expect some hilarious scenes shared by the three. It turns out that Susan is afraid that Leonard's family won't like them.

The second episode of in "The Big Bang Theory" season 10 will be titled "The Military Miniaturization," which will see Howard (Simon Helberg) pursued by people from the military hoping to buy his invention.

The third episode is reportedly titled "The Dependence Transcendence," which sees Leonard and Howard pull all-nighters on their project with Sheldon failing to keep up.

In the same installments, Raj spends the day with Bernadette (Mellissa Rauch) and Penny while Amy (Mayim Bialik) goes to a faculty party.

"The Big Bang Theory" season 10 premieres Monday, Sept. 19 at 8 p.m. ET on CBS.

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