In a world where emotions are physical entities, players take on the role of a Heart Broker, a quirky character who navigates the chaotic and vibrant market of hearts. Each heart represents different human emotions like love, anger, and sadness, and players must barter, trade, and solve challenges to reclaim their own heart stolen in a mix-up. Players interact with various emotional entities—some sincere, some mischievous—while uncovering the mystery behind the heart thefts. Puzzles are based on emotional intelligence, dialogue choices, and relationship-building, leading to multiple endings shaped by the player's emotional decisions.