Beautiful sisters Ai, Mai, Mii, their android maid Mea and slippery pet ferret Unagi make an amazing journey together through time and space without ever leaving their beloved mansion behind! Following the clues of the strange dandelion-like "Popotan," the girls are theoretically seeking the person who has the answers to their most personal questions, but they seem to have more than enough time to take side trips, meet new friends, visit hot springs and occasionally operate the X-mas shop they keep in the house along the way! Yet, the girls' ultimate destiny holds more than a few surprises of its own, and not every moment is filled with hilarity, as moving through time means having to leave friends behind as well.
Episode 1
A young boy named Daichi is trying to photograph ghosts when he happens upon a mysterious house.
Episode 2
Because their house travels through time, Mai always has to leave friends behind. This has caused her to normally keep her distance from others, but then she meets Konami in high school.
Episode 3
Mii decides she wants to cosplay as a magical girl and go around helping people, which leads to her meeting a sickly girl named Miyuki.
Episode 4
Alone in the mansion's Christmas shop, Mea meets a mysterious girl who insists that Mea fixes her doll. Shortly thereafter, however, the girl vanishes, and soon so do the three sisters.
Episode 5
Appearing at the construction site of an amusement park, Ai encounters a dandelion that knows where to find Shizuku, the girl they've been searching for.
Episode 6
The mansion returns to the amusement park five years later where Mai has a reunion with her sisters.
Episode 7
It's been thirty years since Daichi encountered the three sisters, and after seeing their mansion in a photograph of his daughter he goes searching for them.
Episode 8
Appearing at a Shinto shrine, Mii meets Nono, a devout priestess in training. Nono loves Christmas but her grandfather dislikes all non-Shinto ways and beliefs.
Episode 9
Returning to the city where Mai met Konami forty years earlier, Mai mistakes her daughter, also called Mai, for Konami and tries to befriend her.
Episode 10
Mai is distraught after what happened with Konami and tries to destroy the portrait they drew together but Mea intervenes.
Episode 11
Keith leads the three sisters to Shizuku, finally ending their long search. Weary from the constant traveling and losing friends made along they way, they ask her to let them each return to Daichi, Konami, and Nono respectively.
Episode 12
Mai, the now grown-up daughter of Konami, is telling a curious Daisuke, the youngest child of Daichi, about the three time traveling sisters.
