Elso (think Orlando Bloom) is at the top of his Ranger class in the Hero Academy of a big fantasy city. Garrick (think evil Michael Cera) is the least successful student. On their final exam (monster hunting through a fantasy forest) outshines Garrick in a humiliating way.

Shadowy figure (think fantasy Bruce Wayne), impressed by what he's seen at the exam, recruits Elso into Night Rangers - a secret league of vigilantes, protecting the city from the shadows.

Garrick, having failed the exam and expelled from the school, sneaks into school headmaster's office, and steals the Blood Ruby - an artifact capable of controlling monsters. He leaves for the Dark Mountains, and starts gathering an army of monsters (huge spiders, snakes, vampire bats, etc.)

At the climax, Elso must defeat the city from the monster army by stealthily stealing the Blood Ruby from Garrick.

Scene ideas:

• Awesome training montage of Elso going on his first superhero missions for Night Rangers. From helping an old lady to take down a cat from a tree, to capturing bank robbers.
• Garrick puts on an overdramatic supervillain costume and eyeliner, in the Dark Mountains, in the rain.
• An epic battle scene of huge monsters attacking a fantasy city.