In 'Hello, Who's Adventure?', players take on the role of a hapless detective named Sam, who specializes in absurd cases involving odd and quirky characters across the city. Players navigate a vibrant, interactive text narrative filled with unconventional puzzles and bizarre scenarios. Each case leads Sam through the humorous underbelly of society—where pets hold secret meetings, and the postman has a side gig as a magician. The choices the players make affect the outcome of each investigation, leading to unexpected twists, hilarious dialogue, and an overall journey filled with delightful eccentricity.