The Bay City Rollers were one of the brightest things to happen in the 1970s, illuminating a dark decade marred by a plummeting economy and industrial unrest. Alan Longmuir, an apprentice plumber from Edinburgh, was inspired by The Beatles to form a band in the 1960s. Firstly, he enlisted his brother and then his cousin and eventually, by throwing a dart at a map, they became the Bay City Rollers. Success was slow in coming but suddenly, like wildfire, Rollermania spread across the globe. Alan Longmuir recounts his journey from the Dalry backstreets to the Hollywood hills and back to being a plumber. Along the way, he punctures some of the myths and untruths that have swirled around the group. Most of all, he captures the great adventure of five young boys from Edinburgh who for a few years threatened to turn the whole world tartan.