You Do Need power plug adapter while traveling from Somalia to Bhutan.

Here is Why You Need An Adapter

The outlet and plug type used in Bhutan are C, D and G and in Somalia is G. This is how they look like.

Somalia

In Somalia, outlets of type G are in use.

Type G

Bhutan

In Bhutan, outlets of type C, D and G are in use.

Type C

Type D

Type G