Sometimes the best things in life happen when you dare to get out of your depth.

Abby lives and works in the heart of the Lake District. She splits her time between bringing up her daughter, working in the Plum Pie Bakery - and dreaming of the time before her husband, Ben, left.

Lori is on holiday from the States, hoping to find her way to the lake that she's looked at for years in a picture on her wall back home.

Rebecca is contemplating taking the plunge too. Despite her immaculate appearance Rebecca is keeping quiet about a childhood trauma which has left her scared of the water.

Clarissa is the founder of The Wildwater Women. An all-year-round open-water swimming veteran, and with a fearsome manner, she knows the lakes like no one else and her boundless energy defies her years.

Four women, all from very different lives, all with reason to step into the water and wash away their past. But will the friendship they build be enough to keep them afloat when they each must face their fears?