Change is happening at Glasgow Central, with the beginning of a huge multi-million pound renovation across the Argyll line – bringing with it challenges for passengers and staff alike. A Scotland game at Hampden sees the concourse flooded by football fans but there's not enough trains.

Outwith the station, the Network Rail helicopter takes to the skies to survey the lines around Central for faults. Drew calls in the emergency services to help with a pigeon trapped in the station.

A staff absence means the pressure is on for Jackie as she tackles her biggest ever tour, whilst a gaming competition on the concourse causes staff to get competitive.

In the tunnels beneath Central, the engineers tackle complex steel repairs, and the closed lines allows Paul to explore the history of some of Glasgow's forgotten stations. Outside of the station, the team at Polmadie depot work against the clock to get the iconic Caledonian Sleeper back on for its nightly service.