The little sisters are infected with the Bad End Syndrome, which causes them to have nightmares. In order to cure it, Neptune and Vert travel to Plutia's dimension to obtain the Shimmering Flowers. At their destination, Neptune is reunited with Plutia and Peashy, and meets the other dimension's Noire, Vert and Blanc. With the aid of the alternate CPUs, Neptune and Vert ascend a 10000-floor tower which has the Shimmering Flowers at the top. Neptune ultimately obtains the flowers, but when Peashy is in trouble fighting a monster, Neptune sends Vert back with the flowers and goes to help Peashy, despite being unable to use her Goddess transformation in this dimension. Only Vert makes it back to the dimensional gate in time, while Neptune misses the gate and is stuck in Plutia's dimension. However, on the way out of the tower, Neptune accidentally opens another gate between the dimensions, permitting unlimited travel between the two. With the 2 worlds linked, the Goddesses all meet and befriend their counterparts, and Neptune celebrate the occasion with a toast of pudding.

The first installment of the Neptune OVA Series Trilogy. Neptune and her friends visit "Watashi no Natsuyasumi Yama" (My Summer Vacation Mountain) filled with nature to enjoy their summer vacation. The four goddesses, who gather after a long time, are having a good time as usual. During the vacation, Nepgear and other sisters go to the mountains to wander around. After going through the stretch of a long torii (Shinto shrine archway), the sisters wander off into a different dimension. Then Nepgear meets a woman who just looks like her sister Neptune in her adult form. (Source: Crunchyroll)

In a world known as Gamindustri, four Goddesses and their sisters use the power of Shares to rule over their respective nations – the Goddess Neptune of Planeptune, Noire of Lastation, Blanc of Lowee, and Vert of Leanbox. Though originally in competition, the Goddesses formed a Treaty of Friendship to bring peace to the land and free up time for them to do what they enjoy. However, nefarious crime syndicates, rival Goddesses, and a bevy of ne’er-do-wells will test the strength of their relationships and their very existence. What awaits the Goddesses, and will Neptune ever get a chance to clear out her gaming backlog?! Includes episodes 1-5, 11, 12 from the anime series.

What happens when more than one version of Gamindustri and its Goddesses are revealed to exist, and what awaits the Goddesses when the fate of the two dimensions become intertwined? Hopefully, there’s pudding at the other end of this dimension… Includes episodes 6-10, 13 (OVA), plus 3 songs from the videogame series. (Songs are played within the animation episode.)

Today is Planeptune's Cosplay Party! Our host Neptune is completely womped from party preparations. Neptune then finds out that Older Neptune, whom she met in the mountains during her summer vacation, was arriving to this dimension. Nepgear and friends decide to leave Neptune while she finishes preparing for the party, and pick up Older Neptune. However, when Nepgear and friends returned, they found Neptune completely burned out!

Arfoire has a new trick up her sleeve to defeat the Goddesses - a secret monster called Level Trick. During a fierce battle between the Goddesses and this new enemy, Level Trick hits the Goddesses with the "Level Down" attack - a skill that reduces your level and age. Suddenly, the Goddesses age rapidly declined, as well as Arfoire who was accidentally struck by the Level Down attack. Nepgear and her sisters attempted to find the Goddesses after failed attempts to contact them. They eventually were able to find all of the Goddesses, except for Neptune... Meanwhile, Neptune and Arfoire were now living together at an eggplant farm. Because of the Level Down attack, Neptune and Arfoire now have amnesia. As former mortal enemies, what will happen to the unlikely duo living together?