It is the first comic book series to be based on Whedon's short-lived 2002 television series Firefly and the 2005 Feature film into which it was adapted, Serenity. The story is set between the end of the series and the beginning of the film, and its plot includes the depiction of what happened to Lawrence Dobson, the Alliance secret agent who attempted to capture Simon and River Tam in the pilot episode of Firefly, also titled "Serenity."