After a top modern assassin dies, she time-travels into the ancient orphan Hu Fei'er. The original owner was abused by a vicious grandmother and almost sold, hitting the wall to her death. The reborn Fei'er has a mature mind, uses her combat skills to tear apart extreme relatives, and smoothly separates the household under the village chief's witness. She enters the mountain to hunt and accidentally awakens the spirit spring space, relying on spiritual herbs and game to exchange for silver, doing business, buying land and building houses, and pulling her younger brother and sister to study and practice martial arts. Along the way, she rescues the assassinated young master Murong Jin, and the two support each other and develop affection. She punishes the villagers who spread rumors and do evil, relieves and helps the neighbors of her own family, uses her self-made healing medicine to open up the sales channels for medicinal materials, and finally settles down and starts a business, waiting for the returning Murong Jin.