It is Summer 1914 and Tilly Moon, an accomplished pianist, longs for the day she can take her music studies further. If there is one thing she loves more than music, it is her brother Tommy's best friend Dominic, and luckily he feels the same. They embark on a tentative first romance, but, on 4th August 1914, their plans for the future are interrupted when Britain declares war on Germany. Dominic and Tommy are quick to enlist, eager to play their part in the defence of the country they love. Tilly herself gives up her music to train as a nurse, helping to heal those that have suffered most in the unforgiving conflict. But while she throws herself into her new role, her heart and mind remain fixed on Dominic. Will Dominic return to her as promised and fulfil their engagement?