Artie the cat and his human friend Zac are inseparable. They're always up for sharing ice cream, lounging around their home in San Francisco and visiting their friends in the mystic realm. Wait, what was that last part again? When Artie and Zac learn that the Well of Magic is without its protector, they journey back to the mystic realm on a quest to find the missing guardian. But a thief plans to steal all the magic from Artie's home world for themselves. Can a cat and a boy solve the mystery in time to stop the great theft? A perfect mystery-adventure chapter book for fantasy lovers!