In a world where individuals can swap hearts and live out another's life for a day, you play as a heartthief who accidentally steals the heart of a notorious villain while trying to escape a mundane life. Each day presents new choices: embrace the darkness of your new identity, or battle against the rising tide of villainy within you to save those you've unknowingly harmed. Explore complex relationships, uncover hidden truths about yourself and others, and determine who you truly are at your core. Will you resolve the life's threads woven around your chosen heart and ultimately decide whose heart you want to keep — yours or the deceived villain's?