After their parents are lost in an accident, thirteen-year-old twins Grace and Marty are whisked away to live with their Uncle Wolfe—an uncle that they didn't even know they had! The intimidating Uncle Wolfe is an anthropologist who has dedicated his life to finding cryptids, mysterious creatures believed to be long extinct.

Join them as they are dropped into the middle of the Congolese jungle on a thrilling quest to discover the truth about their family and the mysteries of the world.