Enjoy a magical high school love story! Mermaid princess Mia has already hidden in the room for many days. She feels so bored and wants to have a free swim. So this lovely couple decides to go on a summer vacation to a tropical island. On the way, they have a fun time and make some new friends. They also find a secret room where Mia hides. Now it's time for the couple to decide what to do. Do they should go back to the hotel and tell the owner about the secret room? Or do they want to continue their vacation and find the secret room?

You can decide what to do in this exciting story. It all depends on your choices. Make the right decisions and you can have a great vacation with your boyfriend.