Dust of Earth - S. R. Olson - Bog

A time-traveling king must save the future in order
to save the past...

King Jakin Daxx thought he didn't need to pay attention to
prophecies about what is going to happen three hundred
years in the future. But then, he faces an evil opponent and
wakes up in a world that remembers him as a coward who ran
away. Determined to return to his own time so he can save
his family, Jakin sets out to restore the key to his magic.

But the world has changed. It has been divided into four
elemental realms ruled by High Priests who are loyal to his
enemy, and each holds one piece of the Te'eta.

Fifteen year old Malakai Jenks lives a simple life and has
simple goals: Take care of his ailing mother, and woo the
village beauty. But then he trips over an unconscious stranger
and everything Malakai thought he knew about his world is
turned upside down. Swept up in a race against the alignment
of three moons, Malakai embarks on an adventure that will
challenge everything he's ever believed.

Welcome to the Quest of the Guardians: an epic tale of
adventure, mystery, and magic in a world where giants are
common, poison grows on trees, and nothing is as it seems...

Dust of Earth is Episode One in the series.