Ian Bonar is Stevie, a wannabe musician whose look is a hybrid of Jarvis Cocker and early Elvis Costello. Working with his drummer pal Neil (Matthew Baynton) in a call centre, they dream of breaking into the indie music scene. To do this they require additional band members. Step forward the driven (and drinking) guitarist Billy (Kieran Bew) and slightly scatty bassist Emily (Lyndsey Marshal), who has a sideline in making sculpture from hair.

A support group for addicts comes under siege from a mysterious gunman, intent on punishing them for a past tragedy. All with something to hide, the group must confront their shared past to discover the truth and stay alive.