What do you do if you're 34, single and recovering from being jilted two weeks before your wedding day? This is the dilemma Gilly Brown finds herself in. While friends are marrying, having children and moving into the depths of the countryside, Gilly finds herself alone in London and holding on to her fractured family with their tragic past. It's time to meet new people. So, she decides to get a Monday to Friday lodger, and after a succession of alarming interviews finally finds the perfect one in the shape of handsome reality television producer Jack Baker. Gilly falls for Jack's charm and is transported into an exciting social whirlwind of parties, dining out and glamour. When Jack is introduced to Gilly's family and friends, it's only the attractive and eccentric Guy, the newest recruit to her dog-walking group, who isn't quite so convinced about Jack's intentions. As Guy watches them grow closer, his suspicions of Jack and his feelings for Gilly deepen. Is Jack so perfect after all... and what exactly does he get up to at the weekends?