The Majestics, a legendary Scots rock 'n' roll band, are on the eve of their 1986 "Silver Jubilee" tour, and find themselves in trouble when their lead singer, Big Jazza McGlone (Coltrane), is killed in a car crash.

The group's devious and exploitative manager Eddie Clockerty (Wilson) talks Big Jazza's younger brother, Danny (also Coltrane), home from New York for the funeral, into joining the band as their new lead singer.

Ageing heart-throb Vincent Diver (Roëves), 'the iron man of Scottish Rock', is cheating on his wife Noreen (a community nurse and sister of drummer Bomba) with girlfriend Glenna (played by Fiona Chalmers as simultaneously pathetic, manipulative and glutinously cloying), who has an apparent pregnancy and when the unborn child dies (or maybe never existed from the start), she commits suicide by jumping from a bridge into the Clyde.

The fractious on-off relationship between rotund Danny McGlone and Suzi adds a further comic dimension, along with the 'double-act' of the dour Mr Clockerty and his lippy secretary Janice Toner (Murphy).

However, in March 2007, John Byrne explained that the problem had been due to a performance of the song "Tutti Frutti" in one episode (not the title sequence) where Danny McGlone changes the lyrics to "here's the rub, she makes me sleep in a tub".