After One had stolen Two and Four's powers, she decided to trap Four in the moon, letting him stay in there for what? So he could get karma for what he has DONE to her. He trapped her in the moon back then, for 16 years, because of her hurting Three.

CURRENTLY

Four was currently waiting for someone to break the moon he was in, he was waiting for X, his best buddy, co host, crush- i mean bestfriend. Four was scared for X, he was scared that X isnt here. He was currently looking at the drawings(on the walls inside the moon) that one made when she was still trapped in there, there was the algebraliens crossed out, so she could plan a revenge plan for them, to remove their power and steal it to recover Three. Four suddenly saw a drawing of X that was crossed out, he was angry that One included them too.