Book Four of The Ninja Kat series. War is imminent. And Velcro has begun her preparations to set out and gather her allies. First she'll travel to the hamsters' hideout, then to the village of Redfield, before they collectively make their way across the border to the Country of Rath, where they intend to meet with the Elder Meow in order to request Rath's aid in the impending war with the Devil Corps. Meanwhile, blinded by his jealousy and pride, Charlie is still in pursuit of Velcro. However, a revelation he discovers along the way will send him down an even darker path than he's already traveled, and present him with the greatest challenge of his entire life. It has all been leading to this moment. In Velcro: Polluted War, a history of corruption has finally caught back up with our heroes. Unlikely alliances will be formed as it all comes to a head, when Velcro and Rath's Bone Army battle against the Devil Corps in a fight that will determine the fate of the Country of Widows, and quite possibly the whole world over.