In the house of schoolboy Calvan Monroe, very strange things are happening. The boy sees fiery dreams, after which he finds ash and ashes, and his mother behaves like a guest from another world! Soon he meets a talking fire hare. The mysterious animal has a sarcastic character, magical abilities and is in no hurry to leave its new friend. Is Kalvan really a child of fire? Then he will have to return the magic crown and restore the change of seasons! Only a miracle, imagination and a warm heart will help the boy melt the heart of the winter king.