Ruby and her sausage dog puppy Coco can't wait for a family trip to the seaside – but when Coco goes missing on the busy beach, will she be able to find her way back to her family? Ruby’s dad has arrived home with a wonderful surprise – Coco the sausage dog puppy! And when the family go on holiday to the seaside, of course Coco will be coming too. The beach is a thrilling place for a dog – so many sights, smells and holes to dig! Ruby and Coco can’t wait to spend the day splashing in the waves and playing in the sand. But disaster strikes when Coco disappears. Suddenly she’s lost and all alone on the huge, busy beach … Will she ever find her way back to Ruby?