The story is set in the otherworldly realm of Tir na nÓg. This mysterious island, inhabited by a diverse array of fairies and monsters, is explored together with a group of unique and charming heroines. You'll face off against monsters using each heroine's special magic, or sometimes befriend them to gain an advantage in your journey. By applying various pieces of knowledge and ingenuity, you'll explore forests, ruins, and a wide range of other locations. At times, you'll relax and have fun by setting up camp or diving into marine sports, making the most of an adventure-filled summer. This is a story brimming with adventure, dreams, and love, painting the picture of an unforgettable summer. And as the adventure reaches its climax, a great mystery and numerous truths are revealed. Together with irreplaceable companions, the protagonist challenges the secrets hidden within Tir na nÓg.