In a suburb of Ohio, three friends, Anya, Tom, and Jen, stumble upon a mysterious ancient medallion that grants them the power to travel through time and alter historical events. Driven by a desire to correct perceived past wrongs, they embark on a series of interventions that profoundly reshape the course of human history, leading to unexpected and overwhelming consequences for their own reality. Grappling with the immense power and the complex ethical dilemmas of their actions, they ultimately come to understand that altering the past carries unforeseen costs, compelling them to reserve the medallion's extraordinary capabilities for only the most dire and inescapable circumstances.