Switch Off ON the scene

Hello everyone. How to switch off and on the scene. Actually my need is, Based on some user interaction. I need to off the scene or screen to dark and it should be on with some other position of the camera. How to do this.

You can just create a separate, empty scene - and depending on your needs, render the main one or the blank one :thinking: ?

:thinking: That may be a solution. Thanks for your reply @mjurczyk