Jin is a Stone Lion-one of the guardians of the Old City Gate who is charged to watch over humans and protect the Sacred Sphere. But to Jin, those boring duties feel like a waste of time. What isn't a waste of time? Perfecting his zuqiu kick, scoring a Golden Goal, and becoming the most legendary player of all the spirit world. But when Jin's perfect kick accidentally knocks the Sacred Sphere out through the gate, he has no choice but to run after it, tumbling out of the realm he calls home and into the human world as the gate closes behind him. Stuck outside the gate, Jin must find help from unlikely allies, including a girl who can hear a mysterious voice and a worm who claims he is a dragon. Together, they must find the sphere and return it to the world beyond the gate.or risk losing everything.