So basically you want a cutscene to play right when new game is selected? Here's how I usually go about it:
Either make an actor called 'invisible' that has no char graphic, and is your starting party leader in the system database tab. You could also make your starting leader have a default graphic of nothing, but I prefer to do the invisible actor.
So now you're starting off not seeing the player. Next - in the same map that your party starts on, have an event that is trigger by autostart. This is going to control everything that happens in the cutscene. Do all your stuff, and once you're done, have the last few things of your autostart event be fading the screen to black, changing to your actual party that can be visible, transfering to the first playable map, and tinting the screen back to full color.
That's the short and simple v. of it.