As the Cores spread across the city, they choose specific hosts enhancing them and awakening Primevils. However, amid this the Knights rush claiming Cores and awakening to new power as they fight against one another and a war rages. Amidst this a new force enters the city a thirteenth Knight and a mysterious monster. The two of them seeming to work against the other Knights and dismantling the ritual. In the middle of this new alliances of formed and allies break apart. With Kit and Takumi brought to the brink as they seek a way to end the chaos with their allies falling or everything breaking apart, they come to one final clash. As the Beasts rampage the ritual comes more step closer to completion.