Augusto "Auggie" Velez-Colon is an Afghan vet who learned how to play the guitar during his military stint. After returning home he pursued his music and eventually turned up in Nashville, where he is now--eight years later--an in demand session musician. He plays and sings on other people's recordings, does occasional show and tour work while waiting for a chance to record his own songs.
In the meantime he does private eye work, which usually consists of serving paper, taking photos and tailing suspects. But now he's been hired by record exec Corky Barnes to deliver an attaché case to an unknown man. He is paid $5,000 and also offered a chance to record. When the man turns up murdered Auggie must find the item he delivered--difficult because he doesn't even know what it was--and clear himself of a possible murder charge.
In this, his first major case he is assisted by his friend Jazz Jones, a twenty-something free spirit who is waiting for her own big break, and old time P.I. and mentor Harley Rayborn.