Lego Ninjago Master Of Spinjitzu: The Light Ninja; Rise of the Serpentine (S1)

"Girls can be warriors and Ninjas too..." -Katie

The story begins with a character who
suspects she's just a normal teenage girl who lives in Ninjago city and her name is Katie Amaya, Katie also thought that her life was boring and normal, nothing special going on...it was like this until a little surprise from 3 thugs came to her, Katie thought this was the end but...it was the beginning

Soon she met Sensei Wu and he convinced her to become a ninja and holder of the Tessens of Light, thus she became the Light Ninja