Codename: Kids Next Door: Operation Z.E.R.O.

In the world of the Kids Next Door, a secret society of six kids who take it upon themselves to stop the evil adult villains from ruining the lives of every child on the planet, a sinister plot is unfolding. Codename: Kids Next Door: Operation Z.E.R.O. sees the nefarious plans of the villains as they attempt to resurrect the infamous ultimate evil, Grandfather. Long ago, Grandfather ruled the world with an iron fist, bringing fear and terror to all who crossed his path. He was eventually overthrown, and his fate left to be determined by those who defeated him. However, the seeds of revenge had already been sown. His top lieutenant, Father, who had lost faith in Grandfather's ability to achieve his ultimate goal, decided to betray his former leader. This treachery was seen as a slap in the face and a personal affront by Grandfather, sending him into a state of eternal imprisonment - frozen in a state where he could not even try to destroy the Kids Next Door or their allies. Years have passed, and Father, having become one of the most cunning and manipulative villains of the Kids Next Door world, has set his sights on resurrecting the one being who could help him achieve his ultimate goal of global domination. Gathering the other villains together, including Mother (a high-ranking authority figure with the power to corrupt and seduce), Lil' Sister (a seemingly harmless but deadly foe), and Toiletnator (the master of all things disgusting), Father hatches a plan to revive Grandfather from his long slumber. Their plan, dubbed "Operation Z.E.R.O." or "Zero Hour: Endgame Revelation Operation," is a complex scheme that involves the creation of an elixir that will restore Grandfather to his former glory. The first step is to find and collect the components necessary to brew this concoction. Grandfather, however, needs constant fueling with a specialized brand of tapioca pudding, which the Senior Citizombies - creatures turned from the villains themselves - produce in droves. The Senior Citizombies are immortal, and their sole purpose is to create this pudding, making them nothing more than mindless drones. As the villains proceed with their sinister plan, the Kids Next Door discover their nefarious activities. Numbuh One, also known as Nigel Uno, and the rest of the team decide to put an end to Father's machinations and stop them from bringing about the apocalypse. Numbuh Two, also known as Hoagie Gilligan III, takes the lead, working alongside his trusted teammates to prevent the ultimate evil from rising from the ashes. Through their mission to thwart the villains' plans, the Kids Next Door come across a long-lost KND ally, known as "The Toiletnator, Jr.," a young, malevolent villain who was previously a KND ally but became disheartened and joined the villain side. The Toiletnator Jr. provides the team with crucial information about the nature of the Senior Citizombies, Grandfather's resurrection, as well as his current status. In the climactic final battle, Numbuh One, his siblings, and their allies face off against Father and his minions in an epic showdown. As Grandfather's strength grows with every passing moment, the stakes become higher, and the Kids Next Door must confront their greatest challenge yet. In the end, they come up with a clever plan that not only thwarts Father's scheme but also saves the Senior Citizombies by reprogramming the elixir which would allow the Senior Citizombies to return to their human form. However, their success is short-lived as Grandfather reveals his cunning plan: using the Senior Citizombies, the Book of K.N.D. is now within Grandfather's reach, but not without facing the evil Father, who is not so willing to let Grandfather have it.