A tale from Quentin Blake's Box of Treasures. Corky and Loopy are two ordinary girls who happen to also be secret angels! With the aid of a magic pencil that can draw in the air, they go on 'angel patrol;, amazing people in their town with beautiful art and rescuing the odd animal. When they meet street artist Sid, they decide to help him take part in a local drawing competition by lending him the special pencil. Sid creates incredible drawings in the sky and brings joy and wonder to all.