Mariella lives in Berlin with her family of seven. Her father was trained in kung fu martial arts at the Chinese Shaolin monastery. Today he runs the Berlin-Schöneberg kung fu school and prepares her and her sisters for the next tournament. This has been part of Mariella’s life for many years. But the nervousness before each competition never really gets better.

A shimmering shoal of herrings are swimming through the wide ocean when they are suddenly broken up by seagulls. Separated from the shoal, a small herring ends up all alone in a tidal pool. Looking for a way out, he encounters many other marine creatures. Some scare him. But there’s no time for this now: Only by joining forces can they defend themselves against the hungry seagulls.