Arto, the third son of a noble family, inherits the ruins of a demon king’s castle as his territory. Upon turning ten, he is given the job of a Shepherd, a profession known to be weak and slow to level up. One day, while cultivating the former demon king’s land, Arto rescues a small dog—unaware that it is actually a legendary beast. From that moment on, his Shepherd abilities skyrocket at an incredible speed! Join Arto and his mythical sheepdog in an epic tale of land cultivation, gourmet discoveries, and hidden power!