"Under One Flag" by Richard Marsh is a novel written in the early 20th century. This book opens with a dramatic introduction to the lives of its characters, particularly focusing on Lizzie Emmett, a young woman in the ballet struggling with her modest means and aspirations. As the story unfolds, themes of ambition, rivalry, and societal expectations begin to emerge as Lizzie crosses paths with other key figures, including a mysterious foreign gentleman and a renowned actress. The opening portion introduces Lizzie as she grapples with her financial difficulties, epitomized by her worn-out ballet shoes, and creates an intriguing setting filled with her thoughts and interactions. The arrival of Philippe Rossignol, a dapper stranger with unclear intentions, and the unexpected visit from the famous Agnes Graham introduce complex emotions of envy, aspiration, and desperation as they navigate the intricate dynamics of love, jealousy, and class. As Lizzie dismisses the foreigners with disdain, the unfolding interactions set the stage for intense exploration of the characters' connections, desires, and conflicts within the backdrop of the performing arts world. (This is an automatically generated summary.)