Mack stopped in front of the door, noticing it as Monika's and raised his hand to knock, before he could however the door seemed to just vanish.

Confused and concerned Mack looked at the tracker. The anomaly was starting to spread to the rest of Wireland. 

The frog fan looked over to Kara and Luther's apartment to see that their door had disappeared as well.

"Hopefully none of them were inside their apartments when the doors disappeared." He thought out loud, knowing that there would be a certain someone who would be annoyed with the situation either way.

Mack sighed and began to think of a way to stop whatever was causing this, but first he had to find the source.

(Short but decided I should probably update so... Here)