Exciting challenges and great stunts. That's how we know the Coppens brothers. Now they put special rooms full of scientific puzzles, tests and assignments that their famous friends have to bring to a successful conclusion. What familiar face cracks the Code of Coppens?

Every episode, one interesting Belgian visits "The House" ("Het huis") for 24 hours. In this imposing house with a pool, surrounded by a forest, in an unknown location, the visitor is "locked away" from the rest of the world for 24 hours. They are interviewed, dissected, confronted by the interviewer.