Carrie plans a birthday party for Charlotte and finds herself enjoying the company of her neighbor. Miranda invites Joy and ends up going absolutely insane as the "party doula." Seema has an eyelash extension fiasco, and a serious flirtation with Adam. Anthony meets the "future Mother in law." Harry allowed the beans to be spilled after revealing a secret of his own. And at the party, worlds collide, but not really, everyone mostly stays to their own group.