Challenge.

Biologist Sergey Losev works as the head of the laboratory at the Research Institute. He has been negotiating with the American Institute for several years, and now he finally receives a long-awaited job offer. But the call comes to Losev with a delay of one and a half months. There are only seven days left before the Board of Trustees, which must approve his candidacy. Sergey calls America and informs them that he will arrive on time. On the eve of leaving for the States, a scientist wants to say goodbye to his parents, and on the way an inattentive lady crashes into his bumper at full speed.