Hiding in the library to avoid evil classmates, Lisa finds the "Superhero Handbook" and learns how to develop superpowers in herself. The girl begins to train, learns to fly and talk to animals, helps those in trouble and receives the nickname "Red Mask". Meanwhile, the villains are planning to plunge the city into eternal darkness. Lisa must gather a team to confront evil, save the city and prove that anyone can become a superhero.
