In a bustling city where the technology to transfer emotions and experiences from one person to another has become mainstream, you are a 'Heart Tuner'—a rogue therapist with a knack for reining in the emotional chaos of your clients. The twist? You 'borrow' their hearts and take on their memories and feelings to help them. However, when a mysterious client comes in asking for their heart back unexpectedly, you become embroiled in a high-stakes game of emotional blackmail, betrayal, and laughter. The choices you make lead you through a web of interconnected stories, where you decide who to help, who to sabotage, and whose heart you truly want to keep.