In a world where hearts are physical objects, characters trade and swap hearts, leading to unexpected emotional consequences. Players take on the role of a quirky Heart Broker who has the unique ability to sense emotions tied to each heart. As they navigate through a bustling city filled with eccentric characters, players must solve puzzles, unravel secrets, and mend broken relationships—all while avoiding heart thieves and navigating the chaotic 'Heart Market'. Your choices will affect the emotional landscape of the characters around you, leading to multiple endings based on who holds the key to their feelings.