The Solo's have essentially retired to civilian lives, While Luke and Mara remain active in the Jedi Council. Jaina is a Rogue Squadron pilot in the New Republic military, Jacen, a Jedi Knight, and Ben is training as Jacen's apprentice. The book follows these characters as they deal with trouble within the Galactic Alliance, resistance from The Corellian system, and a rift in the Jedi Order.
I felt it was easy to connect with the story since it included some well known characters that were also connected to the new characters so the transition and introduction was smooth and comfortable.
Though it does kind of seem a little like I've heard this story before.....
The series is worth the read even for just getting to know some of the old favorite characters a bit better. :)