Britain's first musical shot in colour and widescreen (a process called Cosmoscope) is a cabaret-style featurette centred on a group of young people in Chelsea lodgings, watched over by a fatherly caretaker. Eight specially written songs are performed by stage stars of the day – most notably Georgia Brown, who later created the role of Nancy in Oliver!

When publisher William Marshall learns his young ward Melissa Collins has committed suicide, he sets in motion a plan to murder the man who drove Melissa to kill herself. Mistakenly believing that singer Larry Shaw is his intended target, Marshall unwittingly seeks help from the man who actually broke Melissa's heart.