Fran Morrison, a travelling musician, is summoned home to London after her father suffers a stroke and finds herself in charge of the family business, a stained glass workshop in an historic backwater of Westminster.

Minster Glass was founded in the Victorian heyday of stained glass making, and when the vicar of the local church asks Fran and her father's assistant Zac to restore a shattered angel window, her research into the window's origins amongst her father's papers uncovers a fascinating and moving love story from the Victorian past that resonates in her own life.

And as she makes a new life for herself in London she discovers that, if you know where to look, there are angels all around.