A sudden explosion demolishes a mediocre 5-story building in the city. Only 10 people have survived but they've lost everything their loved ones are killed, apartments are destroyed with everything that was in there. The authorities are being quite evasive, so the 10 survivors decide to start their own investigation into the real reasons behind the blast. The police, the FSB, and the self-appointed detectives will all be chasing different versions but only after we witness these 10 people's lives unfolded and intertwined, we will discover the truth about the explosion and it will be quite shocking.