Mexican Treasure Hunt Hannah is busy picking out oranges in the grocery store when her angels suddenly transport her to the Merida marketplace in Mexico. Her third mission is to help a boy named Luis track down thieves who have stolen a precious golden urn. Following clues and a treasure map, Hannah and Luis find the urn-but when it disappears yet again, Hannah has a sneaky suspicion that Luis may be hiding something very important from her. . . . As everyone prepares for the upcoming autumn festival, Hannah must help Annie, a girl her own age, who suspects that her brother Zack has been kidnapped. The girls join Uncle Sean on his bread truck, traveling across the Emerald Isle to the rocky western coast.
Mysterious signs pop up along the way-an unusual rainbow and messages on ancient stones.
The minute Hannah arrives in Trinidad, courtesy of her angels, she is nearly run over by Frankie, a young boy in a wheelchair. It's Carnival time, but Frankie is not in a celebrating mood. His aunt, a doctor from New York City, has come to visit and is determined to take Frankie back with her. Frankie doesn't want to leave his island home, so Hannah helps him dodge his well-meaning aunt amid the Carnival commotion. Hannah and her young Inuit friends set out by dogsled.