Seol Jihu was a trash-tier human being. A gambling addict who betrayed his family, lost his lover, and ruined his life on Earth, he eventually found himself in Lost Paradise, a parallel world where "Earthlings" are summoned to fight a losing war against the Parasite Queen. Even there, he died a pathetic death. However, with his dying breath, he sent his "emotions" back to his past self.
Waking up years in the past with no clear memories but a crushing sense of regret and a restored ability to see the "color" of fate (opportunities and dangers), Seol Jihu vows to change. He returns to Lost Paradise, not as a loser, but as the "Son of God Gula." The story follows his brutal journey of redemption as he tries to atone for his sins on Earth while becoming the spearhead of humanity's survival in a world that has already seen its dark future.