As soon as they arrive in a mysterious mansion, the guests discover their identities during a secret ceremony. Will they be traitors or faithful? They must then work together in the first explosive mission.

The first faithful has already been murdered by the traitors under the cover of night. Guests must unmask the culprits, but some faithful provide a very comfortable smoke screen for the traitors.

While the traitors make a chain of murders, the faithful make a chain of errors; some are so convinced they have found the truth, they lead the group down false trails.

The good days seem to be behind the traitors who are beginning to attract suspicion; in a mission that does not fly high, some will be noticed for the wrong reasons.

The vice continues to tighten around traitors who are increasingly suspected by others; luckily, the mission creates doubts among the faithful who wrongly accuse themselves.

The two remaining Traitors are offered the choice of recruiting a new ally from among the Faithful or continuing their murderous quest.

The Traitors decide to recruit from among the Faithful. On a day when the truth comes out, the rookie must learn to lie quickly.

The Traitors have to put 3 guests on the banishment list. For one of these guests, this will be the last day at the manor.

With the 3 original traitors having been unmasked, the 2 recruited traitors find themselves alone and will have to hide their new identity.

It's the last day, and a traitor still lurks in the manor. Will the faithful manage to unmask them and get their hands on the loot?

The 20 guests meet up and set the record straight after an emotional adventure.