Grimbert, Margrave of Turin, nicknamed the Spider by many ill-wishers, was distinguished from childhood by his penchant for political intrigue, and considered himself a talented manipulator, always achieving his goal. At some point, he made a fatal mistake, becoming the target of a conspiracy himself, and this moment crossed out everything he had. There is no longer any title, no honor, no respect to which he was accustomed. There is only shabby knight's armor, a couple of outdated cannons and the lowly honorable craft of a raubritter. A robber, mercenary and adventurer without a coat of arms or honor. But in a scorched radioactive world, which is already bursting at the seams, torn apart by feudal and religious strife, this is already something. Who knows, maybe the Spider will be able to accumulate enough poison to take revenge on his offenders... A combat dystopia, mechs with robot knights and glorious heroes who are not averse to seizing power or going through the difficult path of correcting the mistakes they have made. "Fidem" is the third book in the "Raubritter" trilogy ".