Summer break has begun, and for the first time in years, you're going back to the countryside to visit your family. At first, it doesn't seem like there's much to do so far from the city, but you'll soon find there's more to this quiet mountain village than meets the eye! What worries do your cousins have? Who's the social media sensation taking the small town by storm? What kind of treasure is the mermaid at the beach searching for? And what's up with that weirdo in the gacha mask who's hanging outside the local store?! Solve all these mysteries and more during one unforgettable summer vacation!