When twins Taylor and Amy attend AnimeExpo dressed as their favorite characters, they expect a weekend filled with fandoms, fun, and unforgettable memories. But their excitement quickly turns to horror as a deadly virus sweeps through the convention, turning cosplayers and fans into ravenous zombies. Forced to fight for their lives, the twins team up with fellow survivors to navigate the chaos, facing terrifying zombie variants and discovering a evil zombie entity known as "The Necromancer" who is controlling the undead. With each step, Taylor and Amy confront not only the undead but also the creeping realization that this outbreak isn’t random. As they battle through the convention, they learn of a lockdown at the nearby Sunridge Galleria Mall, where their older sister, Maya, is trapped. Racing against time, the twins must make a final stand against the Necromancer’s influence, facing heart-wrenching losses and pushing their courage to its limits. Part of the Dead Inside Universe, Dead Inside The AnimeExpo is a gripping survival horror tale that blends action, suspense, and the bonds of family amid a global zombie outbreak.