I'm not sure specifically about the 'Titli Serial' on Star Plus. It could be a story about love, family, or the journey of the main character named Titli. Maybe it involves her dreams, relationships, and the challenges she faces in her life.
The problem of inconsistent mouth shapes and lines in the twenty-first episode of Celebrating Years could be caused by changes and modifications in the post-production process. Some netizens said that some of the lines in the play were not synchronized with the dubbing, which might be due to post-dubbing or editing problems. During the post-production process, the production team had changed the lines and the dubbing to solve the problem of inconsistent mouth shapes and lines. These changes involved multiple characters and scenes. Therefore, the reason why the mouth shapes and lines of the 21st episode of Celebrating Years were inconsistent might be due to changes and modifications in the post-production process.
I'm not sure exactly what will happen in the upcoming story. But usually, in such serials, there could be new characters introduced to stir up more drama. Maybe Titli will face some new challenges in her relationships or personal growth.