2560 BCE
The Great Pyramid
Giza, mid-build. Two point three million blocks still to go, and a foreman who badly needs a horse.
Ramps, levers and rollers — how you move a two-tonne stone with no machines.
The world
A machine they
were meant to find
It looks like a gilded Roman orrery — brass rings, a lamp at the centre, a lever that should not move. It was not lost. It was left there, on purpose, for four particular children.
The device
Built as a trap,
used as a door
Brain did not build a time machine so that anyone could travel. Brain built a scattering engine — a way to take four children who were becoming inconvenient and spread them so thinly across history that they could never gather at home again.
The flaw in the plan is the crew. Hallie takes the thing apart, mentally, in the first ten minutes. TukTuk can carry it. Bim can fit inside it. And Ham, who understands none of it, keeps pulling the lever anyway — because standing still has never once occurred to him.
Found, not built
Cannot be steered
One jump per episode
Nobody can break history
112
CE
Set the dial
Rome — home
The place they are always trying to get back to. Warm bread, olive trees, and a very worried mother pig.
The rules
Five rules that keep
the format honest
1
The machine chooses
Nobody steers it. Every jump is a surprise to the crew and to the audience, which is what keeps a hundred episodes from feeling like a checklist.
2
History is not a museum
They never observe. They get swept in, given a job, mistaken for someone, or chased. The century is a character.
3
The way out is understanding
The exit from every episode is figuring out how this place actually works — the ramp, the tide, the trade, the eruption. The learning is the escape route, never a lecture.
4
They never break history
Nothing they do changes the timeline. It removes a whole category of anxiety from the show, and it means every episode can end with the world put back.
5
Home is always one jump away
And it never is. The promise of the format: closure every episode, the ache carried into the next.
The destinations
Eight centuries
they did not ask for
A starting map, not a finished one. Each one was picked because something real and genuinely strange was happening there — the kind of thing a six-year-old repeats at dinner.
68 million BCE
The Late Cretaceous
TukTuk meets something with considerably bigger teeth and discovers he is, in fact, a very fast horse.
Why some dinosaurs had feathers, and what actually counts as a dinosaur.
1718 CE
The Spanish Main
A ship, a stolen map, and Vincent in a hat that fools precisely nobody.
Pirate crews voted for their captains and split treasure by share — an early stab at democracy.
79 CE
Pompeii
The mountain is rumbling and nobody is listening. Except a hedgehog who has been taking readings all week.
How volcanoes give warning, and why listening to the person with the notebook matters.
1503 CE
Renaissance Florence
A painter is halfway through a portrait of a woman with a very small smile. Ham thinks it needs more pigs.
Why the Renaissance happened where it did — and what a workshop apprentice actually did all day.
1287 CE
The Silk Road
Paper, gunpowder and noodles are all travelling west at once. So is a wolf in an unconvincing disguise.
How ideas travel faster than armies, and what a trade route really moves.
1969 CE
The Sea of Tranquility
One small step. Bim rolls into a ball and floats away. Nobody on Earth ever finds out.
Why things fall slowly on the Moon, and what one-sixth gravity does to a potato bug.
112 CE
Rome — home
The place they are always trying to get back to. Warm bread, olive trees, and a very worried mother pig.
What daily life in a Roman neighbourhood was actually like for a kid.