Leo was selling illegal drugs to other teenagers at a club until he was brought to the White House due to the Capitol bombing. He was then told to watch his younger sister Penny while his parents were left to deal with the attack. When asked if their father was scared, Leo replied that he wasn't scared of anything.
Unfortunately for Leo, his mother Alex found out about his illegal activities when Penny found a bag of drugs in their drawer. As a result, he received a lecture.