Mimi, Papa, Grant, and Christina are headed to China in Papa\'s little red and white airplane, The Mystery Girl.
Thousands of miles away from home, surrounded by hundreds of years of imperial history, Christina, 10 and Grant, 7, discover puzzling clues as soon as they arrive at the airportWhile Mimi is attending a writers\' conference, her grandchildren are thrust into what appears to be an unsolvable Mystery involving a mean, creepy stranger, a serpent-like Wall, a treasure map, and ancient artif.
Mimi, Papa, Grant, and Christina are headed to China in Papa\'s little red and white airplane, The Mystery Girl