In a world where greetings are the key to unlocking memories, you play as Alex, a charming but disillusioned detective who discovers a forgotten city where people have lost their ability to say 'hello.' Each time you interact with a resident, you must navigate through their memories and emotions linked to their past hellos. Solve mysteries, build relationships, and unravel the truth behind this city's silence. As you delve deeper, you'll find that every hello could unlock a tragedy or a hidden desire, leading to a dramatic showdown that challenges your understanding of connection.