No need a code, its part of the game. I just dont remember how to activate but i already started it. Not sure if it has somethin to do with some dialogue options from kali. I think you need to unlock talkin with lucy first to have action with her and then, talkin with kali. Im not really sure, but its somethin like that i guess. I need to play it again but i want to wait a lil until next update because im really into twins story and the fairies too, but ask me again to not forget about it, please :)