In 'Chronochum: Whose Hello Anyway?', players take the role of a quirky interdimensional postal worker named Phipps, who delivers letters across timelines. After an experimental delivery goes awry, Phipps finds himself stuck in a time loop where every encounter adds a twist to the timeline. Each letter he delivers holds the power to alter history, but a mysterious figure known only as 'The Editor' threatens to erase Phipps from existence unless he uncovers the truth behind the letters and their interconnected fates. Players must navigate bizarre historical events, interact with iconic figures, and solve a web of mysteries that entwine their past, present, and future—all while dealing with time travel's hilarious mishaps.