On a colourful and festive stage, host Guillaume Lemay-Thivierge welcomes a wide range of beloved Quebec celebrities for a friendly competition aimed at determining who can deliver the best performance. Each guest’s identity is kept secret as they all perform in outlandish costumes. As the season advances, our judges and viewers will be given clues to try to unmask the celebrities hiding underneath the costumes, so they can ultimately identify the best singer of them all.