Unicorn boy

The first few years of Brian's life were unremarkable - nothing weird about this kid, no sir. Then he found a bump on his head. And it grew, and grew, and grew. Into a full-blown, sparkling, SINGING unicorn horn! It was the last thing a shy kid like Brian could ever want - but destiny waits for no Unicorn Boy. And when shadowy creatures from another realm kidnap his best friend Avery, Brian must accept his fate as a hero and go on a perilous journey to try and save the day! Can Unicorn Boy save his best friend from the underworld?!