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

Here is Why You Need An Adapter

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

North Korea

In North Korea, outlets of type C are in use.

Type C

Antigua and Barbuda

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

Type A

Type B