Kat Ellis (Debra Messing) is a single New Yorker who returns to her parents' house in London to be the maid of honor at her younger half sister's (Amy Adams) wedding. The best man is none other than her former fiancé, who unceremoniously dumped her two years ago. Anxious about confronting him and eager to impress him, she hires debonair male escort Nick Mercer (Dermot Mulroney) to pose as her boyfriend. Kat intends to make her former flame, Jeffrey (Jeremy Sheffield), jealous, but her plan backfires when Nick convinces everyone, including her, that they are madly in love.

Kat's Apartment, 79 Jane Street (btw Washingston & Greenwich Streets) Manhattan.

Irving Place and East 19th Street, Manhattan.

Nick's Apartment, 117 East 19th Street and Irving Place, Manhattan.