When a prank at the marina goes wrong, Y/nends up stranded near Mako Island with Cleo, Emma, and a girl she barely knows — Rikki Chadwick. One full moon later, their lives are completely changed. Now sharing a secret that can’t be exposed, the four girls must navigate high school, family drama, complicated friendships, and even more complicated feelings — all while hiding the fact that contact with water turns them into mermaids. As powers grow stronger and tensions rise, loyalty is tested. So