Superluminary Book 1. Aeneas, the youngest of the family who rule -- and terraform -- the Solar System, is attacked in his room. The assassin is less of a surprise than the rescue, which ends with him on Pluto.
Where Lord Pluto does not approve of his presence. Much ensues. Including a peril to the sun, Aeneas knowing things that had somehow been read into his memory, Lady Luna's promotion, the problem of what young people will do if they learn about what is done to Aeneas, Aeneas's ownership of an asteroid he failed to terraform, the insanity of his grandfather, the murder of his father, and more.