Bob Marley's granddaughter Donisha Prendergast takes us on a quest to understand the roots of her grandfather's extraordinary legacy. She has long been committed to his dream of One Love and his longing for Zion, a home where people can live in peace and harmony. But when she looks at the world around her, all she sees is injustice and suffering. Is Bob Marley's legacy even possible? Can we ever reach the Promised Land? To find out Donisha investigates the roots of prejudice and present day struggles with poverty, racism and religious hatred. Along the way, Donisha learns more about the inspiration for Marley's music and uncovers Rastafari's intriguing and unlikely connection to Judaism. And with Donisha we delve into the music that expresses both people's suffering and joy.