Greenskins: Guide an Orc to save a Goblin

In an alternate universe, on a distant planet a new history unfolds. Humanity and its new emperor have decided to eliminate all greenskins. Daring to defy the humans an Orc prince and a no good Goblin rogue gamble everything they have on a single plan, assassinate the emperor stopping the invasion and extermination plans. Can the enslaved Orcs be helped? What is this power of the Orc prince?