You Do Need power plug adapter while traveling from South Korea to Falkland Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Falkland Islands is G and in South Korea is F. This is how they look like.

South Korea

In South Korea, outlets of type F are in use.

Type F

Falkland Islands

In Falkland Islands, outlets of type G are in use.

Type G