Fourteen-year-old Jay and his younger sister Lila accompany their father to the tiny African nation of Togwana where they experience a supernatural phenomenon through a mysterious stone.

"Sam, Otter, Atim, and Chickadee are four inseparable cousins growing up on the Windy Lake First Nation. Nicknamed the Mighty Muskrats for their habit of laughing, fighting, and exploring together, the cousins find that each new adventure adds to their reputation. When a visiting archaeologist goes missing, the cousins decide to solve the mystery of his disappearance. In the midst of community conflict, family concerns, and environmental protests,...

When Scooby-Doo and the gang arrive at Professor Dinkley's archaeological dig in Mexico, they find Velma's uncle missing, and the workers terrified of chupacabras and Aztec gods--and the reader must help them solve the mystery.