1815: Napoleons escape from Elba & the preparations for battle entangle the Morland family in a web of romance & heartbreak. The Allied Army is gathering in Flanders & where the army is the fashionable world must go- so London society hastens to Brussels to enjoy the most exhilarating Season ever. For Heloise it brings a renewed acquaintance with her former suitor to Duc de Veslne-d Estienne; while Rosamund must finally come to terms with her feelings for her cousin Marcus; & for Sophie a meeting with an enigmatic French major could well alter her future. But as romance flourishes in a warlike atmosphere the looming shadow of battle only makes the dancers whirl more feverishly & when the Army marches out to face the might of the French at Waterloo one question is in every heart: which of them will not come back?