Sisters Cassie and Coco have been there for each other every since their mother disappeared when they were children. Responsible Cassie spends every moment trying to be perfect wife and mum, but can't help feeling she's getting it all wrong. Commitment-phobic Coco adores running her vintage dress shop - but since a disastrous break-up, her love life's become an antique. Their lives are full to the brim - so why do they both feel that something is missing? As the sisters try to find their way to lasting happiness, fate has a few surprises in store as the past makes a sudden appearance in the present ...