MasterChef recap: The champ of champs returns for the first mystery box challenge Ben Pobjie Photo: Supplied Wait. Wrong show. No, tonight the cutthroat nature of the competition remains completely absent as the 24 MasterChef finalists continue to drift about the kitchen in a euphoric haze, helped by the fact that tonight's challenge is only for an immunity pin, so for now at least, nobody is going home to the horror of their family. In fact, it's debatable whether there's anything at stake at all, since history tells us that often the person who gets an immunity pin will be too dumb to use it anyway.