Tsukiumi Kurashita, a little girl who was once full of fantasy, always hoped to become a beautiful and graceful princess like her mother said. Unfortunately, she (played by Rena Nounen) is now dressed like a home girl and cannot fit into the current fashion society. Tsukiumi, who still loves jellyfish, left Kagoshima and lived in an old apartment called "Tensuikan" in Tokyo. As the saying goes, birds of a feather flock together, and there are several girls with strong home attributes living here. Chieko (played by Azusa Baba), an administrator who collects precious customs, Bomba (played by Chizuru Ikewaki), who is obsessed with railways, Mayaya (played by Rina Ota), a fanatic of "Romance of the Three Kingdoms", Jiji (played by Tomoe Shinohara), who is obsessed with middle-aged uncles, and a mysterious BL cartoonist Mejiro Juon who never leaves the house. By chance, Tsukiumi brought a beautiful girl home, who knew that the other party was actually a boy who was keen on women's clothing, Kuranosuke Koibuchi (played by Masaki Suda). The appearance of Kuranosuke has brought unprecedented changes to the world of the otaku girls. At the same time, the "Tenshui Pavilion" where they rely on for rest is also facing the fate of disappearing... This film is adapted from the manga of the same name created by Higashimura Akiko.