San Francisco journalist Dan Vasser lives a seemingly ordinary life with his wife Katie and young son Zach. However, his world is upended when he inexplicably begins leaping backward through time to the past. Without warning, Dan is pulled from his modern reality into different eras, where he finds himself compelled to help ordinary strangers facing imminent danger, heartbreak, or tragedy. Driven by a profound sense of moral obligation and the haunting realization that his interventions alter the timeline, Dan must decode cryptic clues in each era to figure out *why* he has been sent to save a specific person.Initially, Dan’s sudden vanishings strain his marriage. Katie is left confused and terrified by her husband’s erratic behavior, especially since Dan is strictly forbidden from explaining the time-travel phenomenon to anyone, fearing the catastrophic consequences of altering history too drastically. The emotional toll deepens when Dan crosses paths with Livia Beale, a former fiancée from the 1990s who was also a "journeyman" before mysteriously disappearing. Livia reveals the lonely, agonizing rules of their shared curse, serving as both a dangerous temptation and a vital guide for Dan as he navigates the
psychological burden of living two lives.As Dan works to save others, his actions inadvertently send ripples through his present. Crucial details change: loved ones who were once dead are suddenly alive, careers shift, and memories rewrite themselves, leaving Dan paranoid about his own identity. The mystery intensifies when Dan discovers he is not merely reacting to random historical events; a larger, orchestrated design connects his leaps, suggesting that a higher power or cosmic force is steering his journey.The dramatic tension peaks as Dan races against the clock in both the past and the present. In the past, he must solve complex human crises—stopping suicides, preventing wrongful convictions, and mending broken families—often risking his life. In the present, he fights desperately to keep his family together while concealing the truth from a suspicious law enforcement agency and an increasingly desperate Katie. Ultimately, Dan learns that every single life he touches is interconnected, leading to a harrowing confrontation with the limits of fate, free will, and the ultimate sacrifice required to protect the people he loves most across the fabric of time.