Hot and Cold Part 1 - Hot n' Cold or Cold and Hot????

Story about two persons... That were too Hot and too Cold...
But then a big twist happened, when their sister and brother put a spell on them.
That resulted to their attitudes being mixed up.
Now, what will happen?
Will they be able to put themselves back before time runs out.
Or will they realize to calm themselves and enjoy or don't enjoy life?
Sub story of The Environmental Love Story