Personalities from all walks of life become masked singers whose identity is kept secret. Guillaume Lemay-Thivierge and his panel of investigators (Sam Breton, Véronic DiCaire, Anouk Meunier and Stéphane Rousseau) must discover them.

Lobster the sheriff goes up against the Robot. The Firefly faces the Hedgehog and the Phoenix challenges Skunk Punkette. Three winners are crowned and three others submitted to a ballot. In the end, a singer will be unmasked.

Five flamboyant performances: the Queen of the day and the night, the Mandrill, the Bébéluga, the Super Otter and the Elephant yéyé. Who will be unmasked?