"Once On This Island" is a musical that tells the story of a young girl named Ti Moune who lives on a Caribbean island divided by social class. The narrative follows her journey as she falls in love with a wealthy boy named Daniel from the other side of the island, leading her to confront the challenges posed by their different backgrounds. The story is narrated by a group of storytellers who represent the island's gods. They weave together themes of love, sacrifice, and the power of storytelling, ultimately highlighting the importance of community and the enduring spirit of hope in the face of adversity.