When adorable little beastgirl Faleel is kidnapped by a bunch of religious fanatics intent on summoning an entity with power rivaling the nanomachines, it’s up to the Crimson Vow to save the day. Meanwhile, Mavis's father has decided to arrange a marriage for his only daughter! Fighting monsters is one thing, but can the Crimson Vow break up this unwanted engagement? Their future as a party depends on it!