Dwight in Shining Armor (2019)

S3E6 Lake Monster

Reports of a mysterious large creature lurking in Woodside Lake catch the attention of Zack, the editor of the school newspaper. He enlists the help of Dwight and Gretta to investigate. To their surprise, they discover that the creature is none other than Winnie the Wyvern, who has an important message intended for Dwight.