After the events of the second part of the world playing with zombies, Roblox decides that David should have a few weeks off. Crazy Dave and the neighbor (Player) take over as the new CEOs, instead of worrying about fixing the moderation. They decide to plan their escape from Robloxia to continue their mission to stop Dr. Zomboss. The citizens of Robloxia, along with all the YouTubers, storm the offices and possibly plan to kill Crazy Dave and the neighbor (Player). But Crazy Dave knows that if they kill the citizens, they can respawn those plants to attack the Robloxians. After dying, they release energy that allows Penny to travel to the next location Zomboss will attack. Furthermore, the Robloxians and YouTubers decide to form an alliance with the zombies, creating three problems and thus starting the war between the Zombies and Robloxians.