Xavier Riddle, his sister Yadina, their friend Brad, and flying robot pal Berby use the Secret Museum to time-travel and meet kid versions of historical figures, helping them solve their own problems and emphasizing that even kids can change the world. The series is produced by 9 Story Media Group and builds on the ideas explored in the children's book written by Brad Meltzer and Chris Eliopoulous, "Ordinary People Change the World".