The show kicks off with a dynamic taster of what the series has in store - namely the inside story of a crack team building a trailblazing, fully-automated metro system costing $50 billion, by far the biggest and most advanced new railway opening anywhere on the planet in 2019. A dramatic scene with our main characters dealing with a crisis gets the ball rolling.
We check in on our engineers encountering all manner of issues tunneling through a minefield of existing infrastructure - skyscraper footings and basements, sewers, a graveyard, and existing rail tunnels.
Another super challenge looms, perhaps the greatest of the entire project: digging two tunnels beneath Sydney Harbour. In the early planning stages, the team actually considered dropping pre-fabricated tunnel sections down onto the floor of the harbour one by one, lowering them from barges, which was the way the road tunnel under the harbour was built.
We follow architect Ross de la Motte, seeing that his vision for the stations has finally come to light. He has gone to great lengths to design stations that benefit from natural light and airflow, minimising the need for additional power. Has he been successful?
An extension is now underway to get people the rest of the way into the centre of Australia's biggest city, including a new tunnel crossing deep under Sydney Harbour. "From a construction point of view it's a nextlevel challenge - even bigger and more complex," says Sydney Metro chief executive Peter Regan.
With 30 kilometres of tunnelling finished, it's time to start building railway stations, laying tracks and testing driverless trains. At Australia's busiest railway station, Central Station, the pedestrian subway known as Central Walks comes to life.
After a decade of planning, construction and testing, the moment of truth arrives: the biggest transport infrastructure project in Australian history is nearly complete. More than 60,000 people from around the world worked on Sydney Metro and the teams are in their final stages of preparation.
