In Victorian England, headstrong adventuress Elizabeth takes up her late father's quest for a rare, miraculous plant. She faces a perilous sea voyage, unforeseen dangers and treachery that threatens her entire family. In present-day Australia, Anna finds a mysterious metal box containing a sketchbook of dazzling watercolours, a photograph inscribed 'Spring 1886' and a small bag of seeds. It sets her on a path far from her safe, carefully ordered life, and on a journey that will force her to face her own demons.