Scamp and the Legend of Laguna Verde

Eleven-year-old Ellis Ring doesn't know she's been blessed by a god . . . or has she been cursed? All Ellis cares about is suddenly being saddled with boy whiz kid, Will Seabury, who won't quit calling her Scamp! Well, maybe she did earn that nickname.
But Ellis's world quickly becomes unhinged, when her father reveals that she's one of two people who can control a powerful ancient weapon. Things turn creepier as Ellis understands clues left behind by a sixteenth-century priest even if she's not sure what an astrolabe and the Lusiads are yet!
Ellis journeys to find a mythical place and discovers new friends, plays Pato, and drinks from the Vine of the Soul to fulfill a destiny that awaits her, but at what human cost? Is she doomed to an unalterable future, or can Ellis shape her own fate?