Nisha Cantor is the longstanding second wife of wealthy American businessman, Carl, a master of murky wheeler-dealing. In London as part of their privileged, globe-trotting life, Nisha is caught entirely off-guard when, at the gym of all places, she learns Carl plans to divorce her. Nisha is glamorous, fearless, and determined to hang onto the life she has created for herself. But soon, she must scramble to adjust to an entirely new landscape as she tries to work out how to get back at Carl, and the woman who is now ensconced with him in the penthouse of the Bentley Hotel, taking Nisha's rightful place (and her wardrobe). Sam is at the bleakest point of middle age. Her husband is jobless and depressed, her daughter barely gives her the time of day, and her boss is systematically destroying the small pleasures she once gained from her job. She is a woman who feels invisible to everyone and trapped by everyone else's needs. When she mistakenly grabs Nisha's gym bag, Sam finds herself wearing Nisha's six-inch high Christian Louboutin red crocodile shoes to take a series of important meetings. The unexpected results give her a jolt of confidence that makes her realize something must change, and that something is herself. And when the two women finally meet, they will discover that each needs the other to put right the wrongs that are done to them, and to the women around them.