I Will Burn My Money (1968)

To talk his nephew, Kleon--a brilliant chemist who adores his wife, Sasha, but hates the idea of having a child--into starting a family, well-to-do Uncle Timoleon has devised a bold plan. With this in mind, Uncle Timoleon decides to threaten Kleon that he will disinherit him unless he gets to it. However, an unforeseen complication brings Kleon back to square one, and as if that weren't enough, a long-lost first cousin enters the picture, bent on getting his hands on the inheritance. Will things work out in the end for Sasha and Kleon?