The Princess in Black and the Mermaid Princess

The Princess in Black and her friends are enjoying a day on Princess Sneezewort's royal boat when they encounter a mermaid princess named Princess Posy. Princess Posy needs their help to protect her sea goats from a greedy kraken. The princesses and the Goat Avenger find it challenging to fight underwater, and only Princess Posy can save the day. Throughout the adventure, the princesses learn the importance of using their voice and standing up for what's right. This installment of the New York Times best-selling series emphasizes the power of speaking up, all wrapped up in a fun underwater escapade.