In 'Hello, Who's Adventure?', players assume the role of Sam, a slightly oblivious yet oddly charming amateur detective who wakes up one morning to find a series of bizarre messages mysteriously appearing throughout their city. Each message is a riddle that leads players through a quirky urban environment filled with offbeat characters—from a conspiracy theorist cat to a slapstick film director who thinks he's a vampire. As Sam uncovers clues, they must navigate humorous dialogues, unexpected plot twists, and their own questionable logic to solve the overarching mystery: Who is orchestrating this mischief? Players will need to utilize their wits, make choices that impact the storyline, and gather unlikely allies in a world where nothing is quite as it seems.