The adventures of the little green fish Friedolin, who lives in a pond in the Eifel on a farm, continue. In the first episode, he has made friends with Mia, the mouse. They help each other and are there for each other. In this story, Friedolin's grandpa comes to visit. Beaming with joy, Friedolin would like to introduce his grandpa to Mia, but the mouse sits sadly on the shore because she has fallen out with her best friend Kira. So they search for solutions together. Through this conversation, Mia understands what a difference it makes when one expresses one's feelings instead of reproaching the other person in an argument. In this way, she not only reunites with her friend, but can also face the cow differently in an angry situation the next day. A valuable story that makes clear how important it is to stand by oneself and one's feelings.