Salesman Eddie McKenna "Ken Stott" takes a side-gig as a DJ at St Jude's Mental Hospital. With the help of manic depressive Campbell "David Tenant" and schizophrenic Fergus "Angus Macfayden" they resurrect the dilapidated radio station.
The possibility of a discharge means Fergus must find a job. The aftermath of the open day is felt by Campbell, Eddie, Francine and the hospital radio.
Buoyed by his accidental sales triumph at Twinview Windows, and with professional radio beckoning, Eddie's relationship with Francine starts to develop.