In a world where emotions have physical forms and hearts can be swapped, you play as Alex, an emotion-challenged investigator who stumbles upon a bizarre murder case. A prominent emotionalist is found dead, but his heart has mysteriously vanished! As the investigation unfolds, you must navigate a city filled with quirky characters—each possessing a different heart that reflects their emotions: fury, joy, sorrow, and apathy. As you gather clues, interact with hearts, and solve challenging puzzles, you must determine who has the victim’s heart and why it’s crucial for solving the case. Your choices will alter the path of the investigation and the city’s emotional landscape in dramatic ways.