A battle weary Diablo finds himself experiencing deja vu when he suddenly wakes up in a mysterious grassy plains. Has he been sent to yet ANOTHER world? How will this world's inhabitants react to the Demon Lord's presence? Luckily for Diablo, he might not be the only one in his predicament...

After finally getting Alluka to Gon, the massive power of Killua's wish draws the attention of an otherworldly entity. Despite managing to save his friend, Killua now finds himself in a world that is not his own. The wish that he had assumed was free of consequence may alter the fates of entire worlds, including his own.