A vacation episode that actually feels like one: no world-ending stakes, just four goddesses being exactly as ridiculous together as you remember them. The animation breathes where the TV series rushed, and the joke timing lands because it knows you've already bought in. This is made for people who missed these characters enough to show up for a single OVA, and it doesn't pretend to be anything bigger than that.

Neptune and her fellow goddesses reunite after a long time apart for a summer vacation at a nature-filled mountain resort in Lastation, hoping to recapture that nostalgic holiday feeling and unwind in a hot spring. While the vacation is underway, Nepgear, Uni, Rom and Ram head into the mountains to wander. After passing through a long stretch of torii gates, the younger sisters end up in a different dimension. There Nepgear meets a woman who looks just like an adult version of her sister Neptune, and the mishap takes a comic turn. This one-episode OVA is the first part of a trilogy, blending comedy with action, fantasy and sci-fi.