A lone figure stands silhouetted atop the Mausoleum of Hadrian. Behind him, the sun is setting over the centre of the known world. Far below, the river is in full flood. The City of Rome lies spread out before him on the far bank. Footsteps pound up the stairs. He's been set up; he is cornered. He jumps.

Bruised and battered, he crawls out of the raging river. Alone and unarmed, without money or friends, the City Watch has orders to take him alive; other, more sinister forces want him dead. He has only twenty-four hours to expose a deadly conspiracy, and save the leader of the world. If the Emperor dies, chaos and violence will ensue. If the Emperor dies, so will everyone he loves.

He must reach the Colosseum, and the Emperor. He must make it to The Last Hour.