Opal Dream (2006)

Pobby & Dingan are invisible. They live in an opal town in Australia and are friends with Kellyanne, the 9 year-old daughter of an opal miner. The film tells the story of the bizarre and inexplicable disappearance of Pobby & Dingan, Kellyanne's imaginary friends, and the impact this has on her family and the whole town. The story is told through the eyes of Kellyanne's 11 years old brother Ashmol.