On November 22, 2010, ten missiles strike against uninhabited areas  of Japan, claiming no victims. This apparent terrorist act is referred  to as "Careless Monday" and disregarded by most people. The series  begins three months later, with a young Japanese woman named Saki Morimi  visiting Washington D.C. as part  of her graduation trip. When she gets into trouble, a mysterious  Japanese man, who introduces himself as Akira Takizawa, helps her  through it. The man appears to have no memory and is completely naked,  carrying only a gun and a cell phone charged with 8.2 billion yen in  digital money.While they are coming back to Japan, they learn that a new missile has  hit their country.
Akira discovers that his phone is part of a game and that he himself  is one of the participants. The game consists of twelve individuals,  dubbed Seleção, who are given 10 billion yen to save Japan. The Seleção  are able to use the phone operator, Juiz, to fulfill any kind of order  for a price. However if the money is used up completely or for selfish  purposes, the individual will be eliminated. As the series progresses,  Akira discovers that one of the Seleção was the one who ordered missiles to be  fired in Japan and the reason he erased his own memories was linked to  Careless Monday. The same Seleção member decides to launch missiles  towards Japan again but is intercepted by Akira who orders missiles to  intercept the incoming missiles. Akira decides that the only way to save  Japan is to lead it and uses his money to crown himself as the King of  Japan and erase his own memory.
The show is ripe with symbolism, such as the use of the word johnnies  and the many references to movies.
