There on the mountaintop stood at least ten giant green ghosts. They were real. Fi Fi and her brother heard about Jesus when they ventured down their mountain in Bolivia and peered into the windows of the missionaries' house. Now, she and Chi Chi are starting a long journey to meet Grandfather who went to visit his Inca relatives of long ago. He's waiting for them at the mysterious Winding Wall. But first, they must journey through secretive Peppermint...