The first wave of an alien invasion coincides with a New Years Eve party in a Welsh valley.

In an alternate reality, children learn how lucky they will be (their "frequency"), knowledge which shapes their destiny. The unluckiest boy must parse the mysteries of free will in order to pursue his forbidden love of the luckie...

As the Roman empire crumbles, young Romulus Augustus flees the city and embarks on a perilous voyage to Britain to track down a legion of supporters.