In 'Hello, Who Dis?', you play as Casey, a private investigator who specializes in solving missing person cases through text messages. After receiving a cryptic series of texts from a missing person, you must sift through their digital footprint, decipher motives, and engage with a cast of quirky characters—all while confronting personal doubts and the digital clutter of modern communication. Each decision you make influences the direction of the investigation, leading to multiple endings that reveal the truth behind the missing person's disappearance and the web of lies that entangles those around them.