When Kabapu sends Watanabe and his colleagues to investigate the sewers surrounding the Across base, Ilpalazzo dispatches Excel and Hyatt to deal with the intruders. However, even as the duo familiarise themselves with the Across security system, they discover a far more sinister breed of intruders lurking in the sewers- an army of Puchuus led by the nefarious Puchuu Queen! Will Excel and the others be able to stand against this overwhelming cute force of evil?
Hyperactive Excel does anything and everything to try to please her lord, Il Palazzo, who wants to take over the planet. Excel’s misadventures takes her and her partner, the ever-dying Hyatt, all over the world, meeting several strange people as they go. Everything is bizarre and goofy, as any kind of anime or entertainment genre gets mocked and spoofed.
