Rachel and Phoebe spot Chandler with a blonde stranger. Phoebe thinks he's having an affair. They follow the pair to a house outside the city.
It turns out that the woman was Monica and Chandler's realtor, and the two are buying a house in Westchester to raise their child.
In attempts to convice Chandler and Monica to stay, their friends remind them of all the great memories they've had in their apartment in the city, shown as clips from previous episodes.