Star chef Piet Huysentruyt invited 150 people for a dinner. The guests had no inkling of what was was in store. Just before diner was served, the lights went out and they found themselves in darkness. A unique experience. After desert a movie explained that the whole evening was a stunt by supermarket Lidl. Watertower TV Productions, working with organisor artmedia | evokepr., helped them reveal the secret and also made a viral after movie as well as several TV commercials. It was a great challenge.