Kiska, wrongly accused and framed for murder, is banished to the deepest part of a dungeon. With no skills and facing certain death, she's saved by a mysterious benefactor who grants her the 'Save & Reset' skill, allowing her to rewind time before death. However, this ability only leads her into a new kind of hell, as she repeatedly dies and relives her ordeal. This is the story of a powerless man who uses the power of death and revival to conquer the most difficult dungeon, dying again and again.