Their rivalry will change the world forever. As competition for the imperial throne intensifies, Constantine and Maxentius realise their childhood friendship cannot last. Each man struggles to control their respective quadrant of empire, battered by currents of politics, religion and personal tragedy, threatened by barbarian forces and enemies within. With their positions becoming at once stronger and more troubled, the strained threads of their friendship begin to unravel. Unfortunate words and misunderstandings finally sever their ties, leaving them as bitter opponents in the greatest game of all, with the throne of Rome the prize. It is a matter that can only be settled by outright war...