Once upon a time, monsters attacked the land where the gods and titans fought 100 years ago and exterminated humanity.... there is only 1% of humanity left alive, but there are 3 people in this 1% of people who can destroy monsters and save the human race! One hero from another world that lives in this world for 3 years, the second is also from another world that entered this world 3 days ago and the third is an assassin from our world, I wonder if they can save us?