The game begins with a tutorial, the only part of the game now that actually has a story. The story of a convict who says he is innocent but we found out later what really killed his wife after finding red-handed cheating on him. A sad story that helps trace the tone for the game.
This first part serves only as a tutorial and the rest of the game for a while, and in principle the game will still not have any plot. In general Prison Architect works quite similar to games such as Theme Hospital or otherwise of the same type.