Echo

A young boy named Otto stumbles into a forbidden forest, where he encounters three mysterious sisters and becomes entangled in a quest tied to a prophecy and a magical harmonica. Decades later, the same harmonica connects the lives of three other children across different continents and time periods: Friedrich in Germany, Mike in Pennsylvania, and Ivy in California. Each child must confront significant challenges, from rescuing a parent to keeping their family intact, as their destinies intertwine through the power of music.