The mysterious "???", who's been busy hiding in the shadows of the Sinking World, finally arrives to help Melinda and Pizza Cat escape. But along with his arrival comes a shocking revelation: could he be...

Joy comes up with a deal too good for the knights to pass on. At the party, the knights encounter Noe, Toya's mentor Shoji, and Petruchaya's beloved Binarya. But someone else is watching and taking note...

Soon after Felix shares his great discovery with his close friend Toya, the knights are interrupted by Petruchaya's annoying and affluent cousin, Lord Noe Catelina. He seems to know how to get under Petruchaya's...

While searching for Pizza Cat and Melinda, the Cat Crew and Evil Doll Gang make their way into the lowest rings of the Sinking World—unaware of the shocking truth they will soon discover.

While trapped alongside her nemesis in the clutches of the Abyssal King, Melinda witnesses something earth-shattering. Can Pizza Cat raise her spirits?

The stand-off between the Cat Crew and the Evil Doll Gang quickly fizzles out, but can the two sides still find common ground to work together and save their friends?

While Francis and company encounter the rest of the Evil Doll Gang on their way to find Pizza Cat, the eponymous cat himself is held hostage in the Sinking World by terrifying monsters —  "humans."

After Nyah'lloween, chaos ensues as Pizza Cat's sudden absence results in fear and mystery.  

Pizza Cat's partner is confronted with a harrowing realization. In the Sinking World, Pizza Cat comes face-to-face with Melinda's mother, the Abyssal King.

In the Sinking World, Melinda quickly declares victory and hurries off to deliver Pizza Cat to her mother, the Abyssal King. In the Floating World, Pizza Cat's partner anxiously waits for his return...

The night of Nyah'lloween arrives. In the midst of treats and tricks, a sinister act begins to unfold.

Francis manages to convince Pizza Cat and Boss Cat to back down, but Boss Cat isn't so inclined to let go of old grudges.