The plot goes like this. There is this rich guy tells a poor guy that he cannot stay inside a locked room for many months or years for money. The poor guy does it. It's a vague memory if anyone remembers that telefilm. Could be an old nepali movie too.
Some more details, they make a bet in a party and starts as a fun when the guy takes the offer to stay locked up.
He actually does it. Stays locked inside.
Anyone remember let us know.

Sounds like a story written by Anton Chekhov