The Sumikko town has been experiencing nothing but rain lately.
One day, something suddenly fell from the cloudy sky above!
"Are you okay?" When the Sumikko characters rushed over, they discovered it was a "Prince" and his "Attendant" from the Sky Kingdom.
The kingdom is currently facing a severe water shortage, and while the Prince is working hard to solve it alone, his Attendant looks worried.
Learning that a clue to solving the water shortage lies in the "Water Temple," the Sumikko characters join their new friends for a grand adventure above the clouds!