A female journalist named Jerry Randolph stumbles upon the mysterious disappearance of her former classmate May Elgar while investigating a cryptic diary in 1945 Chicago. The clues lead her to discover that May's father had been developing an ambitious scientific endeavor before his sudden death, leaving behind an extraordinary invention. Driven by the need to uncover the truth about her friend's fate and the crimes that surrounded it, Jerry activates the time machine the late Dr. Elgar created, propelling herself back three decades to 1916 to track down those responsible.