In a bustling city where love is both a commodity and a weapon, you play as Echo, a neurotic heart therapist with a quirky ability to see the emotional 'heartstrings' connecting people. When the hearts of influential citizens begin to disappear, plunging their owners into emotionless states, it's up to you to weave through a tapestry of relationships, uncover secrets, and determine whose heart has been snatched away. As you interact with colorful characters and decipher their backstories, you'll face moral dilemmas and make choices that affect emotional outcomes, ultimately leading you to the heart of the mystery—or your own heart's downfall.