Determined to find the mysterious mountain that seems to appear and disappear, the castaway monkeys use all their skills to orient themselves in their search, unaware of the dangers surrounding them as they move into the forbidden territory of the Tamarin kings, the secret rulers of the island.

Includes index. Includes glossary. This graphic adventure will enthrall young readers as they search for clues within the story. Along the way they will pick up the math and problem-solving skills that the castaways demonstrate, including reasoning, measuring distances, speed, and length, predicting and probability, and concepts of time.