Just when Liu Jinshan thought he could die without regrets, his family was annihilated! As a result, he became determined to live just so that he could see his only surviving granddaughter, Liu Seol, reach adulthood. As he struggled to raise her and train her with his aging body, Liu Seol, who was born with the talent of a supreme martial artist, grew up much faster than he thought she would. "Don't worry, Grandpa, I'll protect you from now on!"