Vacations of Krosh (1980)

High school student Sergei Krasheninnikov (Krosh) once, quite by accident, meets Vladimir Nikolayevich, an interesting man and collector of netsuke. But soon Krosh discovers that behind this man's open friendliness and decency lie completely opposite qualities. Unwittingly becoming involved in the fanatical collector's devious schemes, Krosh, following his conscience, rushes to untangle and rectify the tense situation.