In a world where hearts can be exchanged, a group of characters finds themselves embroiled in a perplexing mystery surrounding a stolen heart. Players take on the role of a skilled heart-retriever charged with solving the mystery by interviewing various eccentric characters, exploring dramatic backstories, and making choices that will affect the emotional landscape of the game. Each choice can radically alter the relationships and outcomes, leading to multiple possible endings. The quest challenges players to discern genuine emotions from deception, pushing the limits of trust and motives.