Everythings real

A reporter at the globe paper in france covers supermanesque person who is totally unbeleivable in real life. He finds out through his enemy that he isnt real in the sense of us and is an interdimensional hologram .  His enemy starts a worldwide catastrophe that ends up with the reporter seeming to die.  When he wakes up he is aware of other people and the holograms they project.  He is told by the enemy that he isnt real and the supermanesque person was the only thing that was real in the world before.