Eliot a university highschool student whose intelligence ranks him top 1. Went on a summer vacation trip with Johnny, Marco, Ash, Felice, Michelle and Joy.
It is supposed to be a fun vacation not until a strange phenomenon. A Mist covering the whole city which started a genocide. The Mist attacked them causing an accident.
Then monsters of various kinds emerged from the Mist, killing his friends. All seven but one missing. Eliot out of fear tried to escape but witnessed an unknown stranger who killed the hunter hunting them.
In a desperate effort to survive he escaped but along the way, dangers and experiences trained him to be an elite warrior. With his intelligence and continous hunger for knowledge, he learns many things and essential skills to survive.
Yet along the way, he will meet people who either will help him or betray him. But only one of them will be his worthy companion. That later, he would discover a shocking truth about was is happening.