Kingdom Rattus The Rodent Chronicles

For all the rats of the city park, the Citadel is a centuries-old symbol of power wielding unquestioned control over all who live underground. With its keepers on the verge of extinction, two empires seek to seize control, and to destroy any rodent, reptile, or ancient tradition that stands in their way. Bound in secret and blood, the two rulers have sent their finest warriors, Bloodford and Astran, to take the Citadel by force. But time is running out; in four short days something catastrophic will happen. A lot can transpire in four days... It is a race against time as the two killers pit their strength and skills against the might of the Citadel's magic. But both must beware of a mysterious ferret, which might be plotting the downfall of the both of them...