Yes, another newbie!

[ApeCake]

To get a good custom story you just need scripting. A map without any scripting won't be good at all; no music, no ambience sounds or anything, it won't keep the player playing. Sure, the atmosphere can look good, but I doubt it will be great without scripting. Watch YourComputer's tutorials for help. Seriously, it will make your map much better, it's totally worth your time.