Five thousand metres above ground, Dai-Guard and Kokubogar must brave the perils of the Heterodyne's body in search of the original fractal knot. But even as they battle their way through the numerous obstacles in front of them, the clock is ticking- in less than two hours, the army are going to launch a destructive OE that will take down not only the Heterodyne, but vaporise all of Tokyo as well! Will the two giant robots be able to pull off a victory in time?