There are two main plotlines, one following Picard and one on Stargazer. Picard's story is a reasonable if not very good action story. The scenes with him and Guinan could have had used more depth. Using a familiar Cardassian character was a good and unexpected touch. However, this story has little more content, depth and length than a good but not great Starfleet Corps of Engineers e-book.
The Stargazer plotline is filler. In the other books the crew on the ship went off and had adventures while Picard was off the ship. Not this time. Almost all of this story is about Ensign Nikolas. He lost a woman he was infatuated in the last book, so he spends this book miserable. Misery loving company, he does his best to make everyone around him miserable. That included me. This half of the book was a waste of time. The author either should have concentrated almost everything on the Picard story, or made this half actually be a story, instead of one long sulk.