Just when Elena thinks she’s uncovered all of her kingdom’s secrets, she discovers new myths and mysteries on the land and sea! While exploring the western coast, Elena encounters underwater creatures called Sirenas and tries to heal a rift between them and the people of Avalor. After Zuzo goes missing in the spirit world, Elena enlists other spirit guides to help her find him. And when Elena, Esteban and Mateo fall for a trap and are captured, it’s up to Naomi to rescue her friends from their captors' clutches! Elena knows that with courage, strength and a little bit of magic, she can face any threat to the kingdom of Avalor!