Three inseparable teenage friends - the handsome smart guy Kirill Tigrov, the model Yulia Knyazyeva and the “knucklehead” in idiotic robes Asya Belozerova always lived a rich and interesting life, got into funny stories and looked for adventures to their advantage, but one day something happened to them something terrible, after which their lives changed dramatically. Unknown masked men began beating them regularly. Kirill’s sisters, the elder Margarita and the younger Yasenia, also began to be persecuted. In addition, Kirill discovered that he has the ability to clairvoyance and prophetic dreams. It later turned out that behind all the attacks was a classmate of Kirill’s younger sister, Aren Zaretsky, who believed that the girl had killed his adoptive parents and attempted on his life. But is this so? To save her and themselves, Kirill, Asya and Yulia must find the real killer. To do this, they will have to dress up as young police officers and organize their own investigation. But the friends didn’t know where this would lead them...