It was on that faithful day, when Arima Jodan got hit by a dog, named Truck-Kun, and passed away at the age of 25.
Arima would then wake up as a dog, and uncovers a hidden plot, a lot of gangsters, and some very insane conspiracies. Its up to Arima to stop the dogs from taking down humanity, but what will this journey cost him? This is the story of a heroic dog named Arima.