The Shannara Chronicles

An Elvish tree, known as the Ellcrys, is dying. The bad news is that the tree has been the only piece of magic that protects the Four Lands from the Demon World. Amberle Elessedil is the only one who can save the tree. But she has to unlock magic that the Elves haven't used in thousands of years. With the help of Wil Ohmsford, she travels to find the lost magic. But it won't be an easy task.