In 'Chronochums: Who's There?', players take on the role of a time-traveling detective who stumbles into a dimension where time is an unreliable narrator. Each choice affects past, present, and future scenarios while they investigate a peculiar string of disappearances that span various eras. Players must navigate through historical events, solve puzzles with a twist of time manipulation, and interact with colorful characters from different timelines. With the ability to listen to whispers of the past and catch glimpses of the future, players must uncover the truths hidden in the flow of time before it unravels completely.