Japanese RPG Serafina and the Key to the Egg with a classic step-by-step mode will tell us about a woman named Serafina, who lives in a remote small village. She is the owner of an ancient mysterious power, which she needs to protect a certain family heirloom, the Oval Key. However, many years ago, the item was stolen by unknown forces and the heroine lost the meaning of life. Everything changes after the character receives a letter from an unnamed person. She claims that she allegedly owns the artifact and challenges Serafina. If the keeper refuses it, the value will be lost forever. The woman, after consulting with the elders, decides to set off on an adventure-filled journey.

The main events of Serafina and the Key to the Egg will take place in the city of Mirad, where, as it turns out, an auction will be held, and the main lot at it will be the Oval Key. The gameplay of the game is partly a graphic story, where the heroine will communicate or perform actions on various background locations. At certain moments of the plot, the girl will encounter enemies in the form of various monsters or warriors, with whom a turn-based battle takes place. As a result of the battle, the player receives experience, due to which his characteristics grow – survival points, mana, etc.