Club Penguin has released their 39th field op, for the 5th of April. To start with, go to the Elite Penguin Force Command Room for your briefing.
Head over to the Lodge Attic.
Your spy phone will turn green. Click it, and complete the Field Ops by opening the safe.
If you are still confused, here is a video:
Check back next week for Club Penguin Field Ops 40 cheats!