It is the year 1892 and Ian and Callie Castillo have had to suffer the hardships of a single parent family since their father went missing five years ago. Since then Ian has refused to use the last gift that his father left the wounded boy; a telescope that sits collecting dust in the attic. When Callie decides to peer through its murky lens it activates the device and sends the Castillos to the steam-powered floating cities of Jupiter where they discover the secret behind their father's disappearance. But can they uncover the secret behind the Red Spot and save the Jovians before the Martians launch their attack?