Arodon is governed by the Two-Faced Goddess. She sends him boxes with fateful gifts to the inhabitants. However, opening them is not easy, which is why the invaluable are revered all over the world—people capable of opening boxes instantly. At the age of eight, Lika learned that she was invaluable, but her talent had a flaw: Lika not only takes too long to open other people's boxes, but she also cannot solve the riddle of her own. Moreover, it turned out that the invaluable have enemies as well. In attempts to protect their daughter, her parents make a profitable deal—Lika will open the boxes of princes. The day approaches when Lika must fulfill her promise, but she has no idea what terrible consequences this will lead to. What will happen to Lika and her family if she fails? And why doesn’t one of the princes want her to open his box?
