Greta Zargo and the death robots from outer space

Nobody knew it at that moment, but only three things stood in the way of the complete destruction of the Earth: one elderly parrot; one eight-year-old spelling mistake; and an intrepid young schoolgirl-turned-reporter in search of a story.

Greta Zargo needs a big scoop if she's going to win the Prilchard-Spritzer Medal, the quite famous award for great reporting.

But big scoops are in short supply in the quiet little town of Upper Lowerbridge, and all Greta's got to investigate is a couple of missing cakes.

But then, with a whoosh of unknown energy, a mysterious silver robot descends from the sky.