A YS-11 aircraft that had the logo of AEGIS was zooming along the mountain ranges. Without fear, the AEGIS Soldiers that were aboard prepared their guns. All of a sudden, the YS-11's door opened and grayish black monsters that looked like bats infiltrated the plane. YS-11 crashed to the mountains. It happened in the mountains near the flower field. (Episode Title)

Ruriko and Shun were on a mission to find the missing cargo plane. Despite their mission, Shun was acting like a child on a field trip. Shun rested on the flowery field and gazed his eyes to the flying butterflies. Ruriko thought why only two of them were assigned in the mission, but she blushed at the thought. Ruriko warned Shun not to rest on the flowers, and smiled when she saw something. Shun was trying to catch the butterfly but it flew away. Ruriko enjoyed the view of the flowerfield until she spotted the bat-like enemies. The monsters went for Ruriko but Shun alertly pulled her away. While running, Ruriko warned Shun not to step on the flowers but Shun told her to talk about it later. When they were both far enough from the monsters, they prepared to open their gates. Suddenly snow filled the flowery field. A girl appeared from nowhere and revealed a power. The girl freezed the enemies without any hard work. The girl said that she would not allow anyone to harm the Iwatsumesou flowers (seemingly the flowers in the field). Ruriko and Shun thanked the girl and asked who she was. The girl did not answer. Shun and Ruriko told the girl that she must be a Gate Keeper, and the girl only asked back what a Gate Keeper was. Shun and Ruriko explained the meaning of a Gate Keeper. The girl said that because of her power she had always been alone forever. A white long creature appeared under Shun and climbed to the girl. The girl restated that Hisame (the creature) was her only companion. Ruriko asked the girl who her parents were but the girl did not answer, instead she said that she wanted to be a bird. The girl continued that she cannot fly unless she was a bird. Ruriko asked her name but the girl continued speaking of her confusing deep thoughts. The girl said that she could not be a bird but she could fly anywhere but still nowhere. Ruriko and Shun invited the girl to come with them because it may be dangerous if the Invaders appeared out somewhere. The girl said she would fight. Shun told the girl that she was too young to fight. The girl continued to speak that she did not want to see anymore wars so she would fight with her own hands. Ruriko decided to contact Shirei and as she opened her communicating wristwatch, the snow turned into a blizzard. Shun followed the girl but he slipped out somewhere. Shun called Ruriko as he was being blown away.

Ruriko lied in the snow. Ruriko woke up and called Shun. Ruriko saw her wristwatch, distances away from her. Ruriko crawled through the thick snow and picked her wristwatch. Ruriko tried making a contact but there was no signal.

Meanwhile, Shun was in an ice cave. Shun called Ruriko. Shun realized that he was trapped in an ice cave. Shun noticed that the ice was not ice because it was not cold. Hisame appeared and jumped to Shun. Shun asked Hisame where the girl was. The girl just appeared from Shun's behind and called Hisame. As Shun walked near the girl, the girl disappeared and reappeared at his back. Shun was amazed and asked the girl if she could also teleport with her gate power. Shun introduced himself to the girl, expecting the girl to introduce herself back. But the girl said that she was herself. Shun wondered how they both got in a weird place. The girl told him that the place they were was outside the flow. Shun stupidly asked if the girl meant "river flow." The girl said she hated to talk. Shun apologized and asaid that he had to find a way out. Shun needed to get out because Ruriko might be worried. Shun told a story to the girl. When Shun and Ruriko were young they used to play hide and seek. Whenever Ruriko could not find Shun she always cried. After telling a little story, Shun said that he must find Ruriko. The girl told Shun that there was no way out and even said that even if he believed everything would disappear.

Ruriko was still calling out for Shun.

Shun asked the girl why she hated talking. The girl recited in a verse (as she always did), "When you learn that the world is hollow that is the time when sadness in you increases." Shun asked if what she just said was Tanka poetry. Shun remarked that old literature gave him the chills (demonstrated shivering action) and made him drowsy (demonstrated falling down). The girl continued that everything would disappear: people, words, and feelings. Shun was still finding a way out until then he saw his reflection on every ice walls. The girl said there was no where to go.

Ruriko continued calling Shun but still no sign of him. While walking, Ruriko fell into the soft and crumbly snow. Ruriko tried to climb up but only slipped. Ruriko desperately called Shun.

Shun tried to open his gate but his gate would not open (he was outside time and space flow I guess). Shun asked the girl if she was always inside the ice cave and also asked her how she got to Mt. Daisetsu and opened such a powerful gate. The girl did not answer and she only tucked Hisame in her lap. Shun pleaded to the girl that it was important for him to know about her. Hisame climbed to Shun's shoulder, and the girl looked at Shun. Shun promised Hisame and the girl that he would get them out. Shun would also find a way out because Ruriko was waiting. The girl said that she would not hope for anything because hopes were like dreams. Shun did not understand her and regreted the fact that he did not pay attention in literature class. The girl continued, that Shun and Ruriko would both disappear someday. Shun told the girl that "now" was more important that "someday." They both exist because they both see each other in their own eyes. The girl told Shun that he was not someone who should be allowed in the ice cave. The girl asked Shun with glaring eyes how he got there.

Ruriko wondered how it was possible for a snow to show up in mid-summer. A dying butterfly flew towards Ruriko. Ruriko caught the butterfly in her hand. An idea came to Ruriko on how she could find Shun.

Shun told the girl that they are still existing because they did not disappear at that moment. The girl told Shun that he coud not and would not understand. The girl narrated in verse that she had waited and believed all her life.

The girl recalled her past. A man, taller and maybe older than the girl, had to be separated from the girl (note: the flower in the girl's head was given to her by this man). The man bade goodbye to the girl because he had to fight in a war. The girl waited for the man but he never came back because he died.

"To wait, and wait and wait. To believe and believe and believe. Forget thee not for the reason that I live is for the day when my baby, my child comes home to me. Yonder to the north where geese sing their song to their number but now is less that which they came those who do not return travels to the house where the dead once lived"