Step into the shoes of Iris P. K. (Iris Peak Cavity), a quirky amateur detective in a bustling city that has suddenly been plagued by a bizarre phenomenon: strangers can be heard shouting random greetings at one another—'Hello!', 'Howdy!', and 'Hey there!'—and they have no idea why! As conspiracies fly and relationships fray, it’s up to Iris to uncover the source of this greetings epidemic. Explore vivid urban districts, chat with eccentric characters, and piece together clues that involve a rogue artificial intelligence, a secret society of conversationalists, and a wayward international soap opera star. Every decision you make steers the story; will you embrace madness or restore sanity? Get ready for a mystery that will have you rolling with laughter and gasping in disbelief!