Joining forces, Hayate and Monica vow to do everything in their power to free the Madras from the dark designs of the sinister secret union between the Tajiff Company and the newly corrupted Church—aided, of course, by the adorable powerhouse that is Rikimaru. To that end, Hayate and Monica hatch a bold scheme to infiltrate a high society masquerade and gather intel incognito. But when they face off against a determined agent of the Church, will they be able to escape this mess—without Rikimaru's power to help them this time?