Help to build up lighting scene

[Anonymous]

Hello, It is tough to explain but i'll try my best to be specific. I want to create a dynamic scene which should come out to be a silhouette style look . I am leaving a reference image of exactly what I want as an output. ( I am using MAYA 2020 and Arnold Render and Arnold shaders. ) If the reference is not quite explaining or confusing please ask me I will try to be more precise.

[Christoph_Schaedl]

A volume fog and a big area light should do it. 

Take a look at the sample scene with the tree. 

https://docs.arnoldrenderer.com/display/A5AFMUG/Learning+Scenes?desktop=true&macroName=multiexcerpt