Peep: Cool! You found all the keys. Now you have to find the box where I left a note for you.
Peep: It’s a code you need to enter to receive the final message to find out where I hide the presents for you.
Peep: Let me see if I can find the location from here..
Peep: Uhmm…
Peep: Ah! Here you go!
Peep: You need to open 3 locks for the box with the message, and one lock for the final key. You’ll find the 4th key at this place somwhere near the box in this little “house”.