A pair of siblings, a brother and sister, are tasked to watch over the house as their parents have to move overseas. The two spent many months together until one unexpected day, the once serious and orderly sister transformed into a tanned gyaru! Thinking nothing of it, the brother proceeds with the day as normal... that is until an accident causes the sibling pair to swap bodies! The sister now resides in the brother's body and likewise, the brother now resides in the sister's body... oh just how will the two resolve this dilemma now?