Exploring a mysterious cave in the mountains behind their house, John and his sister Sarah are shocked to discover they’ve time-travelled to ancient Egypt! Now they must work together to find a way back home from an ancient civilization of golden desert sand and a towering new pyramid, without parents to save them. The adventures abound—cobras, scorpions, a tomb robber, and more! The two kids have to trust each other, make friends who can help, and survive the challenges thrown at them . . . or be stuck in ancient Egypt forever.