Although her father is the acclaimed Music Hall performer, Keegan Kenway, his young daughter, Isla, who is ethereally beautiful, is never allowed even to go near the Music Halls, which were not deemed suitable places for a lady to be seen at.
Now that her mother is dead, her father is close to bankruptcy and so desperate for the proceeds of a benefit show that, when his co-star is taken ill, he is reluctantly forced to allow Isla to take her place for the evening and he sings his famous sons Champagne Charlie and It was only a dream.
After a supremely successful performance when Isla and he are acclaimed by an enthusiastic audience, Keegan Kenway disappears to a late night party and Isla, declining the invitation, goes home alone, where the party's host, Lord Polegate, arrives to inform her that her father has collapsed and is still unconscious.
In her dismay and anxiety, Isla agrees to accompany the persistent Lord Polegate to his country house, where she gradually realises that his intentions are very much less than honourable and she flees his house in terror.
Lost and alone, she flags down a passing carriage on the main road and, to her immense relief, she is saved by the handsome and kind Marquis of Longridge, whose superb house is nearby.
And already Isla is falling in love –
But is it real or is it only a dream?