The three unique members of "S3" dress up as sisters and take on a romantic comedy trip to a hot spring. Kokoro Mukai plays the third daughter and her lovey-dovey boyfriend. Kurumi Kashiwagi Kurumi plays the eldest daughter who seduces her boyfriend, and Nana Okamoto Nana plays the second daughter. The three then all try to seduce each other at the same time... Their acting in the drama still has a long way to go... but the three make up for it with their sexy charms. Enjoy them.