The machine master Mu Xin is hidden in the world. The machine puppets created by his hands all contain a unique spirituality, as if they are alive. He regarded the most cherished organ worker "Amu" as his own daughter, and devoted his efforts and affection to it. However, the evil sect "Black Abyss" coveted his skills and kidnapped Amu. In order to save his beloved daughter, Mu Xin activated all the spiritual puppets he had created throughout his life, turned them into a torrent of destruction, and invaded the Black Abyss lair. The battle was brutal, and Mu Xin finally rescued Amu at the cost of self-destruction of all the puppets. On the ruins where the gunpowder smoke has cleared, Mu Xin embraces Amu's broken core, and finally realizes that the true meaning of "Puppet Father" is not due to creation, but due to the burden of sacrifice and protection.