In the future, control the minds of others is not something difficult to do. Even the ability to control these thoughts can bring large sums of money. They control the human mind to make it a character in the game can be played at will.
Ken Castle (Michael C. Hall), a wealthy businessman who has this mind control technology, use it to make a game online with the actual characters are human. Game Slayers named it brings a lot of money for the Castle but miserable 'slave' who made the characters in this game include cables (Gerard Butler).