When Jessica Taylor is struck by lightning, she has no idea how dramatically her life is going to change... Lucky to survive, Jessica wakes up in a hospital bed - but as someone else. Apparently she's now Lauren Richardson, wife and mother of four young children. Later that night, Jessica wakes up again - as herself. She quickly works out that when Lauren sleeps, she wakes up as Jessica. Needless to say, it plays havoc with her work and her blossoming relationship with Dan Brennan, the handsome stranger who saved her on the Downs that fateful day. Jessica has no idea what has happened to her and whether she can get back to life as she knows it. Meanwhile, she must quickly get the hang of looking after four demanding children, an even more demanding husband and also learn all about the woman in whose designer shoes she now stands.