The underground city is a huge city that's hidden underground from the upper leave, you have been living in the underground city for all you're life you're a 17 year who grown being known as the underground city troublemaker, people from the upper level hates the underground city well because they think people who live in the underground city are dangerous and scary but in reality it's just filled with genius inventers

Axel: inventer, 17

Ethan: inventer, 18

Thomas : inventer, 18