When Agnes the Dragon moves to the Kingdom of Roses, King Goby, Oona the Strong, Gil the Brave, and everyone else is afraid of her fearsome roar, except for Zooli, who befriends Agnes and shows her friends how lovable Agnes really is.

Gil, Deema, and Oona investigate as the Snow Patrol to find out who stole Molly, Goby, Nonny, and Zooli's sleeping bags, as Gil is convinced that a snow yeti is the one to blame, much to Oona's dismay.