The episode opens with the protagonist witnessing his father, a powerful zombie king, effortlessly subjugate a rare agile Tier-I mutant zombie named Flash, despite earlier limits on his mental power. This successful subjugation reduces his frenzy value but significantly boosts his strength by adding two elite Tier-I zombies and numerous minions to his ranks. Observing this, the protagonist recalls a past event where Rivertown was destroyed by a mysterious Zombie King accompanied by two distinct mutant subordinates—one fat, one thin. Realizing the similarity, he suspects his father is that infamous conqueror, leaving him stunned and conflicted about his dad's true identity.