Do Not Open! #3

aaaaand once again, Nemo and his friends Fred and Oda find a mysterious box in the mail,
clearly containing nothing but trouble! this time they're smarter and return it to
the post office, but then they have to find out it's not that easy to get out of the whole thing:
the box explodes, the content escapes, and then eternal night falls over Boring...

find out who they have to deal with this time and get the new book from Carlsen!