Four friends decide to spend a winter weekend in a rented house in a Uruguayan beach town called Neptunia. Once there, the friends begin to realize that the people are acting strange.

Four friends decide to spend a winter weekend in a rented house in a Uruguayan beach town called Neptunia. Once there, the friends begin to realize that the people are acting strange.

This is Gameindustri. Beings called Goddesses rule the countries of this unreal world. The four goddesses govern four states: Planeptune, Lastation, Lowee and Leanbox. For many long years these countries fought each other over the Share, the source of the Goddesses' power. However, fearful that the conflict would pointlessly erode their strength, the goddesses signed a Friendship Treaty forbidding them from taking the Share by force. Under the treaty, the Goddesses and their younger sisters took a step forward to a new stage in their relations. It is the dawn of a new, dynamic era marked occasionally by shared laughter, disputes as well as cooperation. But what does the future hold in store for Gameindustri...?

Unaired episode 13 of Choujigen Game Neptune: The Animation, included in the 7th BD/DVD volume.

Unaired episode 13 of Choujigen Game Neptune: The Animation, included in the 7th BD/DVD volume.

The Goddesses and their sisters take a camping trip to "My Summer Vacation Mountain." When the sisters uncover another dimension at the shrine gates, they meet an older version of Neptune. Will they find their way back home, and, more importantly, are two Neps better than one?