The Mysteries are on an important mission in Mexico: they must protect the jewel skull of Acalan. Every one hundred years, the artifact has magical powers for a day. Then his owner gets the power to bring the dead to life. After tricking the rogue Hic, the secrets believe the problem is solved. But little Maria takes the skull secretly to revive her deceased cat. It also awakens Rosalita, the Queen of the Dead, which has its own plans with the jewel skull!
