The "WondLa Trilogy" is a series of three illustrated novels written by Tony DiTerlizzi. The story follows a young girl named Eva Nine, who has grown up in an underground sanctuary and longs to explore the world above. As she embarks on her journey, she discovers a vibrant and mysterious landscape filled with unique creatures and challenges. Throughout the trilogy, Eva is accompanied by her robot friend, Rovender Kitt, and they encounter various allies and adversaries. The series explores themes of friendship, identity, and the importance of nature, all while showcasing DiTerlizzi's signature imaginative artwork.