Luo Luo, an 11-year-old boy, is a prodigious gaming expert, most skilled at playing a 3D computer game called "Mecha King." This game is set against the backdrop of a war between rival robots, and Luo Luo has won numerous awards in competitions for it. However, on a stormy night with thunder and lightning, Luo Luo is no longer just an observer of this war. A strange bolt of lightning injects immense energy into his computer, pulling him from the real world into the virtual realm of "Mecha King." Thus, the story begins.