It's the FA Cup final and this year it coincides with a national rail strike. Parvez and his team at Wembley Park Station must get tens of thousands of football fans to the game and back home safely. But there's a points failure at Baker Street, forcing all southbound trains to terminate at the already packed station. Soon scuffles break out on the concourse between rival fans, adding to the pressure.
The on-call Emergency Response Unit is rushed to reports of potentially dangerous damaged track at Leicester Square Station, which requires immediate attention before it starts to impact the service.
At Hyde Park Corner, Kevin is part of the team moving thousands of Billy Joel fans through the century-old station, and the busiest Saturday night of the summer in central London brings its own challenges for station staff, where the team must deal with the late-night weekend revellers.
