Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu.
Trailer
Guest Cast
Rati Gupta
as Anu
Cast Appearances
Kaley Cuoco
as Penny
Episode Discussion
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The runtime os this episode is 20 minutes, not 30! Please, do not change it again, for real stats!