In 'Hello, Who's Calling?', you play as a disgraced former detective turned phone operator for a quirky call center. Each day, you receive a series of mysterious calls from bizarre characters — a time-traveling historian, a frustrated ghost, and even a talking dog — each with their own peculiar problems. Your job is to engage with them, solve their dilemmas through choices, and unravel a larger mystery that links all their worlds together. Will you help them find their lost artifacts, mend their relationships, or simply figure out why someone is prank-calling the IRS? The choices you make not only affect the outcome of each call but also the interconnected story that unfolds behind the scenes as you navigate this eccentric universe.