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A grieving physicist invents a method of time-travel and follows a 23-year path through history in an effort to prevent his daughter from being murdered.
SYNOPSIS:
Six months after his daughter is murdered in a school shooting, a grieving physicist discovers time travel — and realizes the only way to save her is to spend the next 23 years of his life getting back to the day she dies.
Dr. David Dobbs has cracked the impossible. Time isn’t linear; it folds. With his protégé, he builds the Bridge Protocol, a device that can open brief passages between overlapping points in space-time. There’s no straight shot back to the day his daughter April was killed, but there is a path: an 11-jump route across centuries that could place him in the right place, at the right moment, to stop it. Then, the night before he leaves, David’s husband takes his own life rather than face losing him too.
So David does the unthinkable.
He steals the prototype and throws himself into the past, beginning a brutal odyssey through American history, war zones, ancient civilizations, and the edges of human endurance. What begins as a mission to save one little girl slowly mutates into something bigger, stranger, and far more dangerous: a reckoning with grief, fate, and the possibility that history isn’t something you change — it’s something that changes you.
By the time David reaches the final stretch of his journey, he’s no longer the man who left. He’s older, harder, and nearly out of time. Then the movie detonates its biggest reveal.
Stranded in the aftermath of the 1906 San Francisco earthquake, David discovers that a young nurse caring for him is actually April—alive, grown, and from an alternate future where his invention didn’t save the world, it destroyed it.
In her timeline, the Bridge Protocol was seized by a billionaire predator named Alan Moss, who used it to loot the past for wealth, power, and control, destabilizing reality in the process. April escaped into the past with the last surviving research and one of the only remaining devices. Moss followed with the other. And then David learns the cruelest truth of all: Moss was the school shooter. He killed young April on purpose, knowing her death would set David on the path to invent the very technology Moss would one day exploit.
Now David isn’t trying to undo a tragedy. He’s trying to break a closed loop engineered by a monster. To save his daughter, he has to stop the future that required her death. Father and daughter repair the damaged prototype, battle Moss across collapsing timelines, and buy David one last shot at rewriting history.
The final move is the killer one: David jumps decades before the shooting, lives the rest of his life in obscurity, and waits. No glory. No reunion. Just an old man carrying twenty-plus years of grief, sacrifice, and certainty, sitting on the one day that matters.
When Moss finally makes his move, David stops him before he can enter the school. April lives. Rae lives. His younger self gets the life he lost. And David, after sacrificing everything for a future he can never fully reclaim, finally earns the peace he’s been chasing since page one.
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This concept isn't new, but I like your logline and what it represents.
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This logline taps into timeless sci-fi themes: grief, time travel, and the ethical cost of altering fate. The emotional motivation is strong and immediately relatable, and the phrase “challenging the very fabric of existence and the moral boundaries of science” adds weight and intrigue. To sharpen it further, you might consider trimming or reordering the sentence slightly for clarity and flow. For example:
“A grieving scientist uses a revolutionary time travel device to prevent his daughter’s death, risking the unraveling of existence and the collapse of scientific ethics.”
This version keeps the heart of the story while increasing momentum. Overall, this is a solid, emotionally charged sci-fi concept with high stakes.
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