As Mom makes Ted escort Mitsi to the post office, he shows some kids a magic trick involving a rubbing pencil and then gives marbles to the boys playing marbles when Lefty bullied them. They also meet Mr. Hirai, who gave Obaachan tea to help her with her cold. At the post office, Mitsi gets nervous, so Ted mails the letter. The man has mail for the Kashinos, and Mitsi gets the picture Mrs. Bowker took of her and Dash. Excited, Mitsi stops being shy and shows the post office man the photo. She also shows it to Davy and Mr. Hirai, who had a dog he taught to count to three by barking three times.

On her cot, Mitsi reads the accompanying letter from Dash. Mrs. Bowker’s peonies bloom, and Dash and Mrs. Bowker run errands together. Dash made friends with the dog of Mrs. Bowker’s cousin, and Mrs. Bowker walks him every day by his old house. Mitsi writes Dash back. She made new friends when she showed people his picture. She’s going to watch a Mickey Mouse movie after dinner (Dash loves Mickey Mouse).

Every day, Mitsi goes to the post office to check for letters.