The Lost Treasure is a thriller about four young adolescents who come together to solve a deadly mystery. The spirit of a long-dead pirate seeks his 300-year-old buried treasure through the possessed body of a diabolical descendant. It's up to Bobby Holmes from England, his American cousin Brenda Watson, and a couple of unlikely heroes, one of whom has Asperger Syndrome, to traverse the darkened halls of a school at night, and the suffocating caves of a haunted mountain, to save each other and come out alive!