In this sequel, the story follows Katy's adventures as she travels to Europe with her younger sister Clover and their friend Amy. Throughout their journey, the girls encounter new places, cultures, and experiences, providing Katy with opportunities for personal growth and new perspectives on life.Similar to its predecessor, "What Katy Did Next" emphasizes themes of personal development, resilience, and the importance of character. The novel focuses on Katy's continued journey toward maturity and self-discovery, showcasing her encounters and adventures while navigating the challenges and joys of new experiences abroad.Susan Coolidge's sequel continues to provide young readers with engaging storytelling, life lessons, and relatable characters, allowing them to follow Katy's adventures and growth into adulthood.