"Salt to the Sea" is a historical novel by Ruta Sepetys set during World War II. It follows the intertwined stories of four young characters—Joana, Florian, Emilia, and Alfred—as they flee from the advancing Soviet army in East Prussia. Their journey leads them to the ill-fated ship, the Wilhelm Gustloff, which was tragically sunk in 1945. The novel explores themes of survival, loss, and the impact of war on individuals. Each character carries their own burdens and secrets, highlighting the human experience amidst the chaos of history. The narrative emphasizes the importance of hope and resilience in dire circumstances.