The Knights of the Elements wield the power of nature -- earth, wind, fire, and water. But they also train in the mortal art of swordplay in order to walk among the humans when necessary. When a rebel knight threatens to change the world as the elementals know it, one of their order must rely on blending in with the humans to survive. Becoming mortal is the ultimate test of his resolve as he struggles to conform to the enigmatic human world.