When Mario and his mysterious new companion Moonlight board a floating fortress heading towards the Mushroom Kingdom, to their horror, they find that one of Mario's arch-rivals, King Boo, second only to Bowser, was not destroyed after all. They find that he has possessed Kirby, who Mario met in his previous adventure. After a scuffle aboard the fortress, Mario and Moonlight are now far misplaced, and must journey to the mushroom kingdom once more, all while stopping the nefarious king from enacting his horrible plans, saving Kirby, and destroy the wicked Boo once and for all.
This was an alright hack. Mainly, I'd say it needs a bit of polish here and there, some levels were more empty than others, and others were on the short side, so just keep that in mind for the future. You fixed the major issues, so this is definitely acceptable.
Keep getting better, it'll be nice to see how you move on from here.