It's Lockdown, but that doesn't stop Heathrow: Britain's Busiest Airport flying in for a new series.

With only one runway and two terminals open, Heathrow's depleted staff are fighting to keep business going. At the helm is King of Customer Service Demi, dishing out help to all those allowed to travel, including tracking down a missing passenger. Plus, the situation means that nasal swabbing replaces duty free, which could save one couple's nuptials.

The discovery of a new variant of Covid-19 causes chaos in Heathrow as airports around the world begin to close their borders to the UK. As flights are cancelled before the passengers' eyes, they scramble to get on any available plane in a desperate attempt to get home.