Before I start, This was part of the Cold War.
Start of the War Edit
South Korea gets troops from USA and raids what is now Pyongyang, and uses it as a defence port, while the others raid the North Korea side. But China pushed the troops, Other UN members supported South Korea... and Warsaw Pact members supported North Korea.
Middle of the War Edit
North Korea and South Korea were fighting, but South Korea were going to the North Part of North Korea, but they made a straight line to pyongyang, and disrupted the supply line, and went to the current border it is today, but North Korea started to invade, but South Korea forces defeated them.
End of the War Edit
South Korea went to very North of North Korea, and killed them. South Korea then renamed itself to Korea.