Sometimes friendship is the only thing that keeps you afloat ...When Karen's husband drowns off the postcard-perfect Queensland coast, five women realise they are no longer happy to simply tread water in the shallow end of the local pool - and life. Karen wants distraction from the grief that threatens to overwhelm her - and she needs to feel that she could save a drowning swimmer if she had to. Charlie, a divorced mother of two young boys, needs to get fit - and get back into the swim of dating.Then there's Cate, the goddess of the swimming pool, newly married to a much older man; Laura, the dependable local GP everyone turns to for advice; and Wendy, the brisk and capable leading light of the P&C. And all of them have secrets ... Trading aquarobics for triathlon training, they cheer each other on to success, both in and out of the water. As their strokes improve, their friendship deepens and along the way they share tears, laughter and changing-room confidences.