Ten years have passed since Charlie and Josh discovered The Time Bubble. As they wait for Peter to emerge after several years inside, Earth is facing a global climate catastrophe. An asteroid strike blankets the globe in dust and ash, blocking out the sun. Soon temperatures begin to fall. As weather conditions worsen, the members of The Time Bubble team need to make a decision - flee south to escape the weather, or wait for the worst to pass. Choosing to stay, D.I. Hannah Benson soon has more to worry about than keeping law and order. With power supplies failing and food scarce, it soon becomes a battle just to stay alive. And there are some that see it not as a crisis, but as an opportunity. Meanwhile, Josh sets out to investigate the possible existence of a new Time Bubble in Cornwall. With girlfriend Alice along for the ride, their travel plans are soon disrupted by the deepening winter. Can they reach the Bubble and use it to escape? Set a decade after the main events of The Time Bubble, this sequel takes place in parallel with events in the latter stages of that story.