It is vacation time, and Miffy and her parents go off for a trip to the mountains. Miffy is very surprised when she sees snow in the summertime. They arrive at the shore of a beautiful lake where another surprise awaits Miffy: a beautiful rowing boat. What a wonderful holiday! Every day, Miffy waits for the Post Bunny, to see if there is something for her. One day, she gets a postcard from Melanie! Miffy wants to send a postcard in return, so she draws her house and things that she can see around her. Miffy takes her card to the postbox, so she can be close to her friends even when they are far away from each other!