The play takes place in an interrogation room and inside this room; unconscious, are two men. They are both the same person but they do not look alike. They are called Anthony Hill. One of them is the original Anthony Hill, the other is just a clone/copy. They have been placed in this room as part of a science experiment, they have to work out which one is real and who is not. In this room, there is a table and in the middle of the table there is a red button. When pressed, the clone will be eliminated and the original can leave the room. However, if they can't decide who is the real Anthony Hill, they will be imprisoned in this room forever. So they have to choose, who is the original and who is the clone, and to escape the room they must press the button, ultimately killing one of them.