In the life of Evgeny Andreevich Semenov, a teacher of the Faculty of Philology, everything is as usual - everyone uses him, thanks to his weak-willed nature. He is possessed by an alien whose ship has crashed. To his horror, the alien learns that humanity is burning oil, which is considered the elixir of all diseases in the universe...

To save his civilization, the alien must repair his ship as soon as possible and send a signal to his own.

Finally, having repaired the ship, the alien is ready to sign a death sentence for humanity, but succumbs to temptation, because a young and sexy colleague, Anna Mikhailovna, begins to flirt with him...