Set in a bustling city, 'Whose Diary is it Anyway?' plunges players into the chaotic life of a quirky private investigator named Sam Scribbler. After a mix-up at a local library, Sam finds a mysterious diary that isn’t theirs, filled with outlandish confessions, wild secrets, and bizarre incidents involving the city's eccentric citizens. Players must navigate multiple intertwining storylines, make choices that affect the outcomes, and solve hilarious mysteries by piecing together clues from the diary entries—all while dealing with the unpredictable antics of Sam's self-absorbed sidekick, a rival detective, and a group of confused suspects. The challenge lies not just in solving the mystery, but in figuring out who the diary belongs to before everything spirals out of control—like a game of hot potato, but with secrets that could upend someone’s life and a side of comedy.