Sgrìobag is a monster who lives in a plain white world, but with the help of her pencils and paper it does not stay white for long. Sgrìobag draws a crab called Pà draig, who is starting to outgrow his shell. They take a trip to the beach to see if they can find anything for him to live in. Sgrìobag scribbles him a beautiful sandcastle, but a big wave washes the sandcastle away. Pà draig is worried he will never find a new home, but a look at the squiggle pad gives Sgrìobag a better idea.