Two orphans, Shaun and Ava, from Cork in Ireland suffer constant bullying in their orphanage, making life miserable. The only thing making life worthwhile is the close bond they've developed for each other and their shared love of music. On a rare trip out of the orphanage, to Blarney Castle, they get separated from the others and eventually find themselves in a strange and eerie location. As they try to find a way out they follow a beautiful rainbow and meet a leprechaun, Louis O'Shay. They travel with Louis over the rainbow on a Quest - facing untold dangers, adventure and intrigue.