As the episode title suggests, the plot of this episode revolves around the fact that Phoebe has her brother and sister-in-law's embryos implanted to serve as their surrogate. Meanwhile, Rachel and Monica engage in a trivia game against Chandler and Joey to see which of the two teams know the other better. It ultimately leads to Monica betting their amazing New York City apartment. They ultimately lose when they can't identify what Chandler does for a living, with Rachel impulsively guessing he's a "transpondster."