Shall I give the long-ish version?
The setting is the planet Osrynn. It is an Earth-like planet in a binary solar system. Osrynn has 3 moons (with out getting too sciencey here the moons are oriented in such a manner that the tides are similar to that of Earth). There are 5 major continents: Dellyn (creation site of the humans), Grimaz (creation site of the Dwarves), Seere (creation site of the Elves), Firon (home to many, but most prominent natives races are Minotaur and Shifters),
and finally Kem'jon Akal (creation site of Orcs and Gnomes)
Currently the D&D 4e campaign is focused on Firon. Humans discovered it a few hundred years ago and originally were friendly with the Minotaur and Shifter people. After a short while Elves and Dwarves showed up and allied themselves with the humans. They then began quarreling with the Minotaur when the Minotaur objected to the amount of land the colonists were taking.
The mountains in the north are primarly Dwarven settlements, the jungles in the middle are mostly elven. Inbetween the Dwarves and Elves is mostly human (although you can find almost any civilized races there except orcs). South of the Elven jungles is primarily Orcsish territory and their allies which include certain factions of Minotaur and Shifters
The current King of Firons allied races is a human by the name of Leighton Witten. When he was in the army fighting Minotaurs he realized that they could be worked with and become a strong ally if both sides made an effort to work together. When he was named king he appointed members of his Army platoon Barons of various holds around the human dominated lands in Northern Firon.
Aldborogh is the seat of the Kingdom, where Leighton lives (big castle on the east coast of the map, on a very small out cropping). West-North-West of Aldborogh is Blackcrest, where Baron Kendrick lives (main ally of the Players' Party and Minotaur sympathizer)