Journey Through Ash and Smoke

This is book 5 for Ranger in Time. Ranger is transported back in time to help a girl named Helga. When he first arrives, Helga's mother is in tears, since Helga is missing and there's a huge storm outside. Ranger goes out to find her, and brings her home. On the way back, Helga discovers a little white fox pup. She names him Funi.