Intro is here.
Christmas in the mailbox? I mean I guess. It makes more sense than the skating pond. At least there are sometimes cards and gifts and things that come via mail.
But I need to ask "He" bear something. What are you thinking this "Christmas" thing is? Maybe that's the problem? You don't know what Christmas is, so you don't know what you are looking for? Also, why not just ask? There are two bears on the skating pond, not to mention a mouse. Can you just ask them where Christmas is?