For the highly anticipated fourth season of The Mole Gilles de Coster goes with ten unknown Flemings to South America. For three weeks traveling through Argentina, the land of gauchos and tango, and Messi and Maradona. They made a breathtaking tour, but were also test physically and mentally. The ten candidates have a common goal: all jobs do manage to earn as much money as possible. For this they rely on each other and soon creates close ties. Yet, they can't really trust one another, because the group has a traitor, a saboteur. One of them is De Mol. It's a high priority to unmask the Mol. For he or she who knows the most about the identity of the Mol on the end of the trip wins the entire cash prize.

《谁是内鬼》是一部奖金丰厚的比赛剧集，在这部翻拍版中，12 名玩家一起参加挑战：用金钱作为赌注，最后只有一人胜出。在这些玩家中，有一个人被秘密指定为“内鬼”，负责破坏该组织的赚钱活动。最后，一名玩家将在竞争中胜出，并揭发内鬼赢得奖金。