Because of a lie, the princess was mistaken for the prince;
Because of a rumor, the prince was regarded as a reincarnated demon star. He was looked down upon and forced to leave the palace;
Because of an accident, "he" received help from an extraterrestrial visitor, and his destiny changed;
Because of an encounter, "he" met him, and his life was full of love-hate entanglements from then on...