In 'Hello, Whose Nightmare?', players step into the shoes of Alex, an unwitting dream psychologist with the uncanny ability to enter the dreams of others. After receiving a mysterious voicemail from an old client, Alex unwittingly finds themselves trapped in a surreal nightmare that reflects the fears and traumas of those they've helped. Each dream is a twisted world filled with bizarre creatures, warped memories, and the darkness of human subconscious. As Alex interacts with dreamers and confronts their fears, they must decipher the threads linking these nightmares to unveil the shocking truth behind the client’s desperate call. Every choice affects the outcome, altering the dreamscape and revealing deep psychological insights while leading to multiple chilling endings.