A house deep in the country. Shutters closed, surrounded by a 12-foot fence.

Cameras inside. And food. Mountains of food.

A woman's voice, sweet as a spoonful of honey: 'Welcome to Mystery Manor, Sarah. Here you will find all you need. Except one thing. Communication with the outside world.'

Five missing teenagers.

'Don't worry, they'll be back soon. They must have just run away.'

Or is it something more sinister? What is going on in Mystery Manor?

As the clock runs down, Magali and Charlotte hunt for clues all over France in a desperate attempt to find out.

Are you ready to join them?

It's a journey you won't forget.