Sci-Fi Lounge stage set. Comes with lights. Daz users should note that the materials only work in Poser.
As a background set the new AJ Expo-Cars Hall could probably be adapted for a Tron: Legacy style scene. Includes an .OBJ version, so Carrara and Vue users should be able to load it easily. Although note that there’s a complicated explanation of the textures, which suggests you may not get the same glow/shine results in other software.
As I’ve noted here before, getting authentic glow effects (with light spillover into the surrounding air) is not at all easy inside DAZ and Poser. See my DAZ Carrara tutorial on making authentic glows.