Step into the shoes of an unassuming greeting card writer who becomes an accidental detective after receiving a series of mysterious notes signed only with various greetings. As players navigate through a series of bizarre encounters with eccentric characters, they'll need to solve quirky puzzles, piece together clues from conversational exchanges, and decode the meanings behind various 'hellos.' Every choice impacts the storyline, leading to multiple endings where the true identity of the cryptic sender may reveal unforeseen connections to the protagonist's past.