As Kyrie, Morte, and Taupy are travelling through a continent of a summer desert, Kyrie passes out from dehydration. Agan runs into them, offering them a ride to a nearby hospital. Dr. Elephant, the director of the hospital, cares for Kyrie, while Rigolet, the assistant director of the hospital, escorts Morte and Taupy to a lodge. Later in the night, Kyrie has a dream of a deceased young man lying in a coffin with a flower next to him and Morte was in tears. The next morning, Naja and Rhi'a arrive on the continent, in which Naja also passes out from dehydration. After Naja regains consciousness, he and Rhi'a are given directions to the hospital. Naja and Rhi'a tells Dr. Elephant that Kyrie, Morte, and Taupy are members on the World Destruction Committee. In the middle of the night, Morte finds out that Kyrie, Taupy, and a few orphans are baking a cake for Dr. Elephant's birthday. Morte soon find Dr. Elephant tied up in ropes and surrounded by oil. Rigolet reveals Dr. Elephant's past secret, saying that he was a former assassin, as he was responsible for the death of Rigolet's family. However, Dr. Elephant started directing the hospital in order to atone for his sinful acts as an assassin. Morte then reveals that her family was killed by beastmen as well, as it is realized that the young man in Kyrie's dream was Reve, Morte's younger brother. Kyrie, Taupy, and later the orphans witness Dr. Elephant's captives, attempting to protect him. However the oil is made contact with one of the candles of the cake, enflaming the lodge. Kyrie, Morte, Taupy run out with the orphans, and later Dr. Elephant walks out with an injured Rigolet. Morte starts to leave, recommending Kyrie and Taupy to stay with Dr. Elephant. However, Dr. Elephant suggested the two to go with her, in an effort to help her ease her emotional pain from the beastmen.

Kyrie, Morte, and Taupy are headed to the continent of autumn leaves, and they manage to catch a ride with Agan. However, the World Salvation Committee of walruses returns again, only to find the World Destruction Committee aboard Agan's ship. The four eventually become captured inside the World Salvation Committee's submarine, however they soon find themselves submerging underwater. Naja and Rhi'a manage to board the submarine before it submerged. Naja reveals to the rest that Agan was smuggling a bomb aboard. Kyrie, Morte, and Taupy begin to defeat the submarine crew, while Naja and Rhi'a attempt to defuse the bomb. However, the bomb drops to the ground, thereby activating it. Everyone scurries away from the bomb, and the bomb explodes. This causes many leaks and damages throughout the submarine. Due to the massive flooding Morte, Naja, and Agan separate from Kyrie, Taupy, and Rhi'a in the control room and the bathroom, respectively. A plan is deducted to manually restart the engine, due to the unresponsive controls, and the only way to get there is through a small duct passage in the submarine. Taupy is guided to the engine room, but could not restart the engine, since there was a leak in the fuel tank. Agan reminisces of meeting a young man, later realized as Reve, a year ago, who tells Agan to send a message to Morte, saying that she must wait for him as he is trying to change the world. However, Agan never knew that the message was supposed to be sent to Morte until now. Hearing this, Morte is determined to know that there is enough fuel in the engine itself for the submarine to surface. They are able to surface and arrive on the continent. Naja and Rhi'a call a truce on the World Destruction Committee, and Agan is glad to finally have his message delivered to Morte.