My name is Rachael, and I’m on a solo Antarctic expedition.

But a month ago I lost contact with basecamp.

No radio. No sat phones. Just static.

Only one thing has reached me: a BBC World Service broadcast, reporting a nuclear strike on the UK.

I’m safe for fourteen more days in my little hut at the bottom of the world. But I can’t stay here forever, I have to find out what’s happened.

Even if there’s no one left to tell.