In 'Paradox Chronicles: Hello, Who?', players take on the role of Alex Mercer, a disgraced time agent falsely accused of tampering with the timeline. With the help of a malfunctioning AI companion named Quirk, players must traverse different historical periods—from the Renaissance to a dystopian future—gathering clues, solving puzzles, and avoiding paradoxes that could unravel reality itself. Each decision affects not only the present but also the alternate timelines, creating a rich tapestry of consequence and intrigue.