In 'Chrono Chums: Who's There?', players assume the role of a quirky time-traveling detective named Max Tempo, who must solve a series of mysterious occurrences that unfold across different epochs while juggling a dysfunctional crew of historical sidekicks. Each 'chum' you recruit, from a sassy Victorian inventor to a chill caveman, offers unique abilities and perspectives critical to solving the riddles of time. As you navigate through timelines, your decisions shape relationships and the environment, unraveling the grand mystery of a nefarious time-traveler deliberately altering history for their gain.