Overlord: Darker Legends.
Prologue.
There are many tales of noble heroes, good deeds and selfless acts of great heroism. This is not one of them...
Years ago the land of Greenvale was ruled by the Black Barron. A dark, powerful tyrant who crushed everyone who stood against him. He conquered the lands, built a kingdom, created magical spells and objects, recruited or possibly created the minions, slayed all kinds of monsters and beasts, raided other lands to steal treasure and rape women, and ruled with an iron fist and great efficiency. Under his rule things worked and everyone knew who to fear.
(Which kinda begs the question: Why didn't they make a game based on him? Overlord: Rise of the Black Barron. It seems like it could've been just as good as Overlord 1 & 2, and way better than Dark Legends.)
But despite all his grand accomplishments, the one thing he failed to do was produce an heir. (Actually with all the girls he took to his bed there should've been a bunch who were impregnated, but no-one ever reported him becoming a father.) So he ended up making his younger brother his next in line.
Duke Gromgard was a gentleman with a good heart, but as a ruler he was an incompetent fool. But then the Duke's wife gave birth. And when the Black Barron looked upon his newborn nephew, he saw the boy's potential. The boy took after his uncle far more than most sons took after their fathers. When the young lord grew up and took the throne, castle Gromgard and the land of Greenvale would be in good hands.
But only if it could last that long under the Duke's rule.
The Black Barron retired as ruler and died a short while later. At first no-one mourned his passing, but as time went on and the effects of Duke Gromgard's leadership became clear, more and more people began to mourn him and long for the days of his iron-fisted rule. If only due to the Duke's incompetence.
Over the years, troubles emerged for Castle Gromgard. The surrounding lands became blighted... the crops rotted and died... giant bugs began infesting every nook and cranny of the land... halflings stole from the villages... bandits and wolves terrorized the countryside... buildings, bridges, roads, and even the castle itself began crumbling and collapsing...
Duke Gromgard embarked on an epic quest to foreign parts, one which would restore the fortunes of his land. But while he was gone, Duchess Gromgard ran away with a strong, rich nobleman from a neighbouring realm.
Floozy whore.
To make matters worse, the Duke's quest proved fruitless. He returned disgraced. Without a fortune, and without a wife. Poor old devil.
And then one day, on the young lord's sixteenth birthday, his father, broken hearted and consumed by his obsession to restore glory to Gromgard, set out on another epic quest to save the land. Leaving him alone with his rather unpleasant older siblings. Lord Grenville, and Lady Gerda. As well as his rather devoted and busty lovers, Leia and Luna.
This is the tale of what happens next...
Only with more boobs and blood, and less cartoony stupidity...