Manatsu and her friends discuss activities they can participate with the other school clubs with Minori suggesting sand art at the beach. As such, the four girls hold a sand art contest involving a great number of people in their school and participate in it as well. Over the course of the contest, Manatsu and her friends bond over making their own sand art. However, a heavy downpour occurs on the second day of the contest. Taking an idea from Laura as she looks through her photographs, Manatsu uses some parachute to protect the sand art pieces from the rain. At that moment, Numeri summons a Zenzen Yaraneeda to attack the beach, forcing the four girls to transform to engage it...