As the girls try to get used to being mermaids, Cleo desperately wants to go to Miriam's pool party. Rikki and Emma don't want Cleo to go but she does anyway. Lewis finds out that she is going and Zane wants revenge after the girls "stole" his Zodiac. Zane hurls Cleo into the pool and uses her power to save Cleo. Their secret is only revealed to Lewis, but how much longer will their secret stay secritive?
This is a extremely good episode! It is a crutial episode to watch if you want to follow the series and is very enjoyable to watch! It is a crime not to watch it!