The Lion’s Song: Episode 3 – Derivation dives into the scientific world at the beginning of the 20th century – an era of great achievements, but also dark downfalls. On the eve of World War I mathematician Emma Recniczek enters the academic stage to solve a problem revolving around “change”. In order to discuss her theory with like-minded people Emma tries to gain access to a gentlemen’s club of famous mathematicians. As her request is denied because of her being a woman, she decides to disguise as a man.