One day Harry flies over to his friends and starts singing a new song that he just made up. However, the friends can’t handle Harry’s tone-deaf singing, so when he asks them to sing the song with him, they all make an excuse and go home. Harry is upset because his friends don’t like his singing. So he ends up singing by himself. Tongtong feels bad for Harry and offers his house for Harry to practice in. Meanwhile, Pororo and the others learn about Harry singing alone and decide to put on a mini concert for him to cheer him up.