New student Dolly is like a quiet little sparrow, always spending time alone.

Since she seldom talks, everyone calls her “Little Doll”.

One day, Jack and Ralf discover that Dolly is being bullied and immediately step in to chase the bullies away.

However, Dolly says nothing at all and simply lowers her head. Jack and Ralf begin to wonder: Does she really not know how to talk?

What secret is she hiding deep inside? Their journey of friendship has just begun.

Where will it lead them? Come on and find out together!