On a world called Ephinea, a civilization flourishes through the use of "Eleth," a substance found in a material called "Crius." Within the world, three kingdoms - Windor, Strata and Fendel - struggle for dominance. In the remote Windor town of Lhant, the eldest son of Baron Aston, a spirited and guileless boy named Asbel Lhant, enjoys the carefree days of his youth with his childhood friends and inseparable comrades.

However, an event occurs that makes Asbel determined to become stronger, and so he decides to enter a training academy for knights in the kingdom's capital.

Seven years pass. Asbel is 18 years old and striving to become a fully-fledged knight. However, he is forced to give up his dreams when his father, Aston, passes away. He cannot escape the obligation he feels to succeed his father as the Baron of Lhant.