The super race "rheios" has selected the human race as the next possible candidate to become a "sentient being" and allow its inclusion on the "dimensional galactic union" as a trainee member. However, in order to determine its capabilities, a test is designed and imparted by the "conis", a race of pure energy beings. One million humans are kidnapped, modified, and transported to the test field; where they have to traverse over 109 levels in order to reach the last level on a complex labyrinth like dimension know as "realm" and make their race worthy of becoming a sentient being. The test won't be easy, besides the complex structure of the dimension they have to battle and conquer diverse enemies or monsters using its modifications know as sync abilities.