Joey, Michael, and Sarah pass through a magic door into the land of the Great Kettles, where they help recover the moon from a giant who has stolen it.
Hoping to visit the friend he had to leave behind when his family moved, Joey builds a time machine and makes an eventful trip to the land where Father Time, Mother Nature, the Man in the Moon, and other such characters live.
When Sarah sneaks aboard Old Man Winter's wagon and travels with him through the magic door to the Great Kettles, she must help him stop his power-hungry assistant from taking over the weather-making for his own purposes.