One not at all wonderful morning, Kostya Kostochkin wakes up in a strange apartment, in a strange family... and in a completely different time. Suddenly he was transported thirty years ago. Without family and friends, without money, without communications, in a completely different country - how could he get out of this mess? But there, in the past, Kostya meets a “real friend” Tishka Baran, and faithful Babaka will not leave her beloved owner in trouble - the special communications of counterintelligence general Gorbunkov works in all directions. Will Kostya return back to the future? Will he be able to understand who his real friend is?