Arseny Troepolsky recognized only one thing in life - work. She was his food, his lover, his entertainment. The computer design firm he headed flourished. And then suddenly thunder struck from the clear sky. They killed the deputy, the design genius, Fyodor Grekov. The worst thing is that his body was found by... Arseny. After serving three days in jail as the main suspect, he finally appeared in the office, but he was not at all happy about returning to his favorite job. Trying to understand why Fedya was killed, he discovered that everyone around him was lying - his employees, his mistress, the sister and niece of the deceased. But his brain, which works like a computer, sorted everything out. And the mountain of lies collapsed and buried all the “worthy” ones...