Heledd, leader of the first violins, has been in love with her irrepressible conductor Rosemary for years.
A secret from her past means she must hide how she feels, but the time they spend working and performing together is enough for Heledd until a near miss with a speeding car forces her to rethink everything she thought she knew.
When the orchestra is mysteriously summoned to perform in the Welsh village where Heledd grew up a village she hasn't returned to in decades the life she's made for herself begins to unravel, and her secrets threaten to escape.