Kiya and Kinjal return to the Kingdom Beyond.

For their next adventure in the Kingdom Beyond, twins Kiya and Kinjal must help the flying horses with a sudden invasion of their lands. It turns out that the tree ghosts are losing their forest! To save the trees, and the Kingdom, they must use their collective knowledge of this world and of course their magic!
THE GHOSTS ARE COMING

The Kingdom Beyond is overrun with bhoot (ghosts who live in trees), and Kiya and Kinjal are the best hope of finding a solution. The ghosts are angry and dangerous--with one look they can steal your soul--so the twins must be extremely careful and use all their wits to help their flying horse friends and the rest of the inhabitants of the magical land so important to them. But what if the bhoot are angry for a reason? What if it's their very own home trees that are being cut down, leaving them with nowhere to go?

This time, Kiya and Kinjal face danger from even those they are trying to help. Can they find out who is destroying the ghost forest?