Level Up - Season 0 Episode 1 Pilot

Four completely different regular high school teenagers take on a dark leader named Maldark, who goes haywire by escaping from a video game and brings in havoc by bringing in various different monsters (such as Ghouls, Trolls, etc.) to the real world, and where a battle becomes released. Now the four teens must fight together for experience, take out Maldark and his minions and save the real world.