The world is getting older,and the population human is growing quickly,the natural resources is not balances with the pollution .In Europa this situation caused hunger problem . the Europe federation was give up to solve the problem and hand over this problem to the scientist. To solve , The scientist has made a wisdom is only one child that able in a family. Everyone in Europe have to used an ID bracelet and every areas already have the point check to know the illegal child. If the there is an illegal child it will be bring to Ciyosleep. Ciyosleep is a place that the illegal kids will be frozen and taken out until the situation in Europe get better.
In Helios Kliniken Gruppe there are seven identic babies girl was born were their parents was died because of the accident car. Their grandpa Edward Sattman was confused to choose which one will stay with him. But he don't want to loose the sixth of his grandson. Luckily the doctor who helped the childbirth is part of Sattman family and he wamtto helped Edward to hide the identity of those kids. Edward grown up his granddaughter in a city in Rumania they stay in an old flat. Even the flat is small but it has the modern system like to open the door using eye scanning. There is a small room behind the mirror were they can hide if security come to check every flat. And under the floor there is a secret place to hide the gun by using code. There is only one table in there and one bedroom with several mattresses. And also there is a big transparent computer that help them to know the situation each other when they go outside.
Edward Sattman teach them the basic knowledge and talent like self-defense, using computer, math, language and also how to hide until they are seven years old. they are have a same face white skin ,tall, blue eyes and pigtail style hair. One day before Edward show them the real world, he collect them around the table and start talking to them
"you already know the situation in outside, there only one kid that able in one family it means just one from of you can go to outside every day for your safety. so, to make all of you can go to outside now you use name from the older to the younger according to days in a week. So, Monday can only go out in Monday, Tuesday go out in Tuesday until Sunday go out in Sunday. And everyone of you must tell to each other what you did on your day, so people will not suspicious with you. In outside you only use one name that is Karen Sattman. And you are not able to speak about your sister in out side. And tomorrow is Monday turn to out side first."