It is the year 2020, and the age of the future is closer than it seems. With the advancement of technology, and the implementation of new laws, everyone believes they are safe. However, a new threat arises from within the city walls, and the anti-government group known as Black Satin deems it the excellent time to strike at its long-time enemy, the elitist Code Eos. But the new threat endangers both groups, and quite possibly the world. Amidst all this, Black Satin's Mark Lee, lands himself with the ace of Code Eos' assassination squad, Lee Donghyuck. !!! Multiple POVs but main pairing will be markhyuck.