"Dolly" is a heartwarming story set in the Blueberry Ocean, focusing on a dolphin experiencing unexplained sadness. Her friends, noticing her gloom, come together to create a magical bubble filled with joy and memories. Each friend contributes to the bubble, making it a symbol of their support and love. This act of kindness and the playful interaction with the bubble help Dolly rediscover happiness and learn the importance of sharing feelings and relying on friends. The story teaches children about dealing with emotions and the power of community in overcoming difficult times.