The Bushmen risk their lives 12 metres underground, beneath a crumbling roof attempting to free their stranded digger, while Sam Mehan swaps steel caps for stilettos in the Opal Queen Ball. On the eve of the famous Lightning Ridge Opal Festival and outta time, The Misfits battle to treat 150kg of matrix opal, forcing Cody to cook up a miracle. In Lightning Ridge, seasoned buyers threaten to derail the team's massive sale. Rory Cheal returns to the fold, joining Mark in the open cut on their million-dollar hunt. Chris receives a season-saving phone call at the eleventh hour, before supporting his fiancée in the Opal Queen Ball.