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OTRC: Kaley Cuoco joins William Shatner in Priceline ad, plays 'secret' daughter (Video)

Henry T. Yamada, Holland Baum, William Shatner and Kaley Cuoco appear in a Priceline commercial in 2013. (Priceline)

William Shatner's Priceline character, the "Negotiator," is a dad!

Kaley Cuoco of the hit CBS comedy "The Big Bang Theory" plays the 81-year-old "Star Trek" actor's adult "secret" daughter in a new ad for the bargain travel website.

"The Negotiator harbors many secrets, and this is just one of them," Shatner in a statement provided by Priceline. "It's another layer to the enigma of The Negotiator that shows us there are many different ways to find great hotel deals. And, as in life, there is something new he can learn from a younger perspective."

The commercial for Priceline's new hotel "Express Deals" campaign is set to begin airing on TV on January 14 and hit YouTube on Wednesday.

The ad sees Shatner, sporting a goatee and cap, driving a little girl, played by Holland Baum, who is carrying a pink backpack and stuffed bunny. He drops her off in front of a mysterious dojo at the top of the mountain, where a man, Master Hahn, is waiting. In the next scene, set 20 years later, Cuoco, 27, appears at the same spot with him as Shatner pulls up.

"So how did it go," a clean-shaven Shatner asks.

"Well, DAD, spent my childhood living with monks, learning the art of deal-making," she replies.

Cuoco is with set to appear in two more ads that will be filmed this summer, the Associated Press quoted her as saying.

The actress said in Priceline's statement that it as "definitely exciting working with Bill and being part of a campaign and a brand that I've pretty much grown up with."

"He has single-handedly built the Priceline Negotiator into a pop culture icon," she said. "I think there's a lot of overlap in our fans, who will appreciate seeing us together as a father and daughter team. And who wouldn't want to be William Shatner's daughter?"

Shatner, best known for his role as Captain James T. Kirk on the original "Star Trek" series and films, has been a spokesmodel for Priceline, on and off for about 14 years. Following what appeared to be an on-screen death in a January ad, he made a "comeback" as the Priceline Negotiatior in August 2012, with a commercial that paid tribute to the cult 1991 movie "Point Break."

Watch Kaley Cuoco and William Shatner in the new Priceline commercial below.

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