The quiet didn't last long after the defeat of the Ethos. Sigil Slayers-- foot soldiers of the eldritch beings-- remained. Though scattered, the slayers wreck havoc, and are hunted down. The Di-Gata Defenders, protectors of RaDos, face off against their prey; but after a battle with one of the beasts beholds a confounding discovery, the clock starts ticking as a new mystery dawns. RaDos is in danger once more, and secrets begin to unfold.