Kat and Rosie have been helping out at Calico Comfrey's Veterinary Surgery ever since they stumbled across its secret door one summer holiday. Join them as they rescue and care for the incredible, enchanted creatures of Starfall Forest. Along the way, they might learn some valuable lessons about bravery, friendship, and loyalty! Rosie and Kat go on a camping trip, where they encounter a friendly yeti who just loves candy! He's fluffy, adorable, and covered in white fur-so they name him Snowball. But trouble is brewing. A famous author has come to Starfall Forest, and she is determined to prove the yeti's existence. Can our heroines keep the forest's magical secrets safe? And can they and the magical vets help Snowball when the little creature has an accident?