This comic is a continuation of the Firefly universe, and it should get special mention as this one was actually written by the series creator Joss Whedon. There have been other continuations of the series in comic book form, but not all of them were written by Whedon, and suffered accordingly.
This is the second book of the mini series, and it takes us through a few episodes of the lives of the crew of Serenity, and it takes place before the events of Those Left Behind, even though it was written afterwards. Its official place in the timeline is after the TV series ends and before Those Left Behind.
The artistry is somewhat different to the others in the series though it was penned by the same artist, but the characters are the ones that we all know and love.
There are some fantastic moments in this book where we get given a look at some of the fantasies of what the crew members would do if they became filthy rich. It is worth reading this for those moments alone.
For Firefly/Serenity fans, this is a great read.