Ep. 16: It's Summer Vacation! Let's Gather, Everybody!

16

In order for Maki's beach house to compete with a nearby hotel, Lucia, Hanon, and Rina hire Caren, Noel, and Coco to help them with their chores. The six Mermaid Princesses engage in a beach volleyball match against some guests of the hotel. (This episode is considered non-filler due to the introduction of the secondary trio and the establishment of their new role.) (Source: Wikipedia)