Summoned to another world, the knight Lee Hwan willingly wielded his sword for the sake of his beloved. However, what awaited him upon his return was only the chilling betrayal of his lover. Feeling the imminent approach of death, Lee Hwan, in order to take control of his own fate, threw himself off a cliff. And as if it were a lie, Lee Hwan found himself three years back in time. To avoid the same future, he runs away from people, dreaming of returning to Earth. In this journey of Lee Hwan, his friend Absalom, expressing a desire to protect him, intervenes. Though swayed by Absalom, Lee Hwan could hardly trust him. After all, Absalom is the dragon who betrayed him at the last moment and had to be defeated.