When Priss is trapped in a cafe with a rogue boomer that is too much for the AD Police to handle, it falls to Linna and Nene to tackle the monster. But with both Linna and her hardsuit untested in battle, can the Knight Sabers hope to emerge victorious in this engagement?

A boomer-eating monster is stalking underground Tokyo- but the AD Police have been told not to go after it. Determined to do their job, Leon and Daley decide to track the beast down anyway. Meanwhile the Knight Sabers are also on the trail of the creature, and Nene for one can't afford to mess up this battle, or she will be out of the Knight Sabers- for good.