Since childhood, identical twins Leona and Fiona Dunbar have been getting in - and out - of trouble by pretending to be each other. Yet underneath, they couldn't be more different. Outspoken Leona lives to break rules and scandalize their respectable hometown of Lexington. Fiona is a seemingly demure churchgoing girl who is the apple of her domineering, widowed mother Mavis's eye. But together, the twins have fooled teachers, boyfriends, bosses, racist police - and most importantly, straitlaced Mavis. Their unbreakable bond keeps them fiercely loyal... So when Fiona feels stifled in her passionless marriage, and Leona is heartbroken over losing her one true love, it's perfect timing to change places once again... Leona is shocked to discover she enjoys the security of being a wife and homebody - along with the unexpected spark between her and Fiona's husband. Meanwhile, Fiona is indulging her inner wild-child and Leona's ex-lover becomes one temptation she's having trouble resisting... As the sisters' masquerade ignites desires and appetites they never expected, it also puts their most damning secrets on the line. Once the fallout rocks their small town, can their deep sisterhood shield them from total disaster and help them reconcile their mistakes? Or will it become a weapon that shatters their lives for good?