In a world of gifted hunters and monsters, a weak hunter Sung Jinwoo gains extraordinary powers through a mysterious program, leading him to become one of the strongest hunters and conquering even the strongest dungeons.

A cleaner who disposes of dead kaiju revives his childhood dream of fighting them instead. But the parasite kaiju inside him complicates his plans!

After a powerful dragon devours him, an average adventurer transforms into a living skeleton and sets out on a mystical journey to regain human form.