The islands of MiYu lie in a giant circle and each has a shape of a zodiacal sign. They shimmer with magic. Dragons devour rocks and lay shining jewels, ghost owls fly into your dreams and steal your most treasured memories. "I banish you from our island!" the high priest roars. "You may only return when Smald lives again!" Opal and Tiger-eye have a problem. A dragon turned their greatest enemy into an emerald statue and they are blamed. There is only one way to turn him back: find his weight in emeralds. Sadly, all precious jewels are already in use, as an eye of a golden sea serpent for instance or as a crown for the Emperor of Scorpio...