Jane Kuznetsov has long wanted to travel among the stars. But first she must travel the Solar System, gaining the capabilities and the expertise to do so. Along the way she discovers that the Earth system has surprises. Such that once Cats, those blue-furred six-limbed near centaurs, lived in the asteroids. And even on Mars. Further, she will find that Earth is known to the inhabitants of other systems. Including the friendly green-skinned humanoids the Lizards. And the not-so-friendly grey-skinned Frogs, some of whom are lurking in the Kuiper Belt. Can Earth protect itself from the Frogs? Jane Kuznetsov is determined to make it so.