In 1896 New York City, psychologist Laszlo Kreizler is enlisted by Police Commissioner Theodore Roosevelt to catch a killer preying on homeless boys.

After the events at Lake Victoria, the prehistoric school of blood-thirsty piranhas make their way into swimming pools, plumbing, and a newly opened water park.

In this modern telling of the classic tale, aspiring singer Katie Gibbs falls for the new boy at her performing arts high school. But Katie's wicked stepmother and stepsister are scheming to crush her dream before she can sing her way into his heart.