Moscow. A multi-storey business centre. The desert 25th floor hosts the call centre of the “Internet Store for Adults”. Its employees every day sell sex toys and devices over the telephone. One hot summer day thirteen persons are taken hostage by two mysterious voices introducing themselves as Father and Mother. They demonstrate a clock-operated bomb planted inside the call centre and threaten to detonate it at any moment if the hostages fail to follow their instructions. Besides, it comes to light that Father and Mother know every detail about each hostage’s life and secrets. The persons inside the call centre become isolated from the world around, and, while the bomb is ticking, they experience first-hand what it feels like to be in absolute power of the invisible sadists and learn things about each other that they could not imagine.