Beach Picnic; Mrs Whistlehead's Surprise - S3.E12

Bill and Corky are having a beach picnic and everyone is invited! The trouble is that in order to have a beach picnic, you have to get everyone to the beach. But with so many different people, dogs, trolls and dragons coming from so many different places, how will Bill and Corky get everyone there? / Bill and Corky plan to give a surprise present to Mrs Whistlehead.