In 2105, mankind dived deep into the Hegni Rift Valley in the Greenland Sea in order to extract the mysterious substance "Source Matter", but he did not want the extraction to cause a sudden change in global climate. In a very short period of time, the continents disappeared, and the human beings who were aware of the doomsday in advance used the power of the "source material" to build an artificial island "Ark Island" in the snowy mountains of the highlands. On Ark Island, there are distinct classes, but no matter what class of people they are, they are also looking for a stable home in the end times. However, some of the mad scientists did not stop their research on the "source material", and even more, they used it in the experiment of artificial babies. The waste from the experiments bred a virus that killed many people. A mysterious fire destroyed the laboratory, and no one knows the details of the fire. After the fire, two experimental babies were missing ......