The episode details the abduction and murder of 13-year-old Daniel Morcombe in 2003, focusing on the extensive police investigation and subsequent trial of Brett Peter Cowan. Cowan's confession, obtained through a "Mr. Big" operation, led to his conviction. The case highlights the devastating impact on the Morcombe family and their subsequent advocacy for child safety through the Daniel Morcombe Foundation. Their efforts have resulted in the proposed "Daniel's Law" in Queensland, creating a public sex offender registry. This law aims to improve child safety by increasing transparency and parental awareness.