In the heart of a city, the inhabitants of a tower wake up one morning to find that their building is shrouded in an opaque fog, obstructing doors and windows…

Four teenagers’ lives are turned upside down when a mysterious event propels them into parallel dimensions.

Nathan, 16, lives alone with his father Stephane. A newcomer in high school, he is invited to a party and falls in love with Louis, a boy in his class….