We see Vexen in front of an ice fortress
He wonders around and sees a large key and sees a large keyhole, he then thinks of the keyblade. He then gets a light bulb picture and teleports inside.
Inside he sees crystals and ice and memories
He goes up to one and is about to use it for his selfish purposes but he turns around and sees Superman and he's punched.
Note: look up the fortress of solitude to get this chapter