The young man Xia Yuan accidentally travels to a wondrous world of contract spirits, where he begins as nothing more than an ordinary low-tier contract spirit. Just as he is on the verge of disappearing, the kind-hearted and resilient young woman Mo Shiyu takes the initiative to form a contract with him, unlocking his extraordinary growth talent and special abilities. From then on, the two journey together, growing stronger through one trial after another, gaining precious companions and warm friendships as they steadily advance toward a broader world and greater ambitions.