You Do Need power plug adapter while traveling from Antigua and Barbuda to South Korea.

Here is Why You Need An Adapter

The outlet and plug type used in South Korea is F and in Antigua and Barbuda are A and B. This is how they look like.

Antigua and Barbuda

In Antigua and Barbuda, outlets of type A and B are in use.

Type A

Type B

South Korea

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

Type F