S01E01 Genesis
After Special Agent Michael Cates testifies against vicious drug lord Jacob Calder, he is put into the witness protection program under the name Chance Bowman as a trucker driving a state-of-the-art long-haul 18-wheeler.
The evil Jacob Calder manages to get himself released from prison and takes personal supervision of the hunt for the man who put him there, Chance Bowman. So Burton Hardesty, Chance's Justice Department supervisor, reinstates Chance as a federal marshal.
Justice Department undercover agent Michael Cates’s family was killed after he testified against crime boss Jacob Calder. Now Cates is working out of an 18 Wheeler under another undercover identity, that of Chance Bowman. As Cates wanders America listening to country music and helping people he is also dodging hit-men and still trying to take down Calder.