Go to ski village on the map, enter the sports shop, go around to the changing rooms, click the 3rd one. That is a secret door to the HQ.
Just Go To This Website For A Full Guide On "How To Complete The Case Of The Missing Coins - Mission 3" The following is NOT a link http://www.club-penguin.org/club-penguin-mission/club-penguin-mission-3-case-of-the-missing-coins.html
Mission 3? You can see it on youtube.
it is 3568
See the related link.
It is different every time you go on the Missing Coins mission in Club Penguin.
In G's droor
There isn't a missing bottle mission on club penguin!
the code for the missing coin mission is: 5 up 3 left 0 down 2 right
Search on Google for 'Case of the Missing Coins Walkthrough.' The best ones are youtube videos
you go to the HQ and get the flash lite
Find the coins.
I Do Not Know So Find out Yourself