How does plot structure determine the theme of a story?

How the plot plays out can affect it because the plot can directly affect the theme because if the plot is someone stealing something and he gets caught then a theme could be stealing gets you know where. Hope this Helps :)

The plot  includes the exposition, rising action, climax, falling action and resolution and all those details in a story lead up to the end which ends up to learning about what the theme is 
1 = exposition  is the explanation of the idea or theory
2 = rising action is something that hooks the reader into the book and leads up to something big 
3 = climax is the most intense and exciting part 
4 = falling action is after the climax and it means when the conflict is resolved 5 = lastly the resolution is the action of solving the problem