Pandora Schuster is about to turn thirty but that's the least of her worries. She's just been tested for a hereditary family illness and, expecting the worst, she's desperate for her ex-boyfriend and father of nine-year-old Iris to be a part of her daughter's life. But there are two major problems: Olivier Huppert lives in Paris and he has no idea that Iris even exists. Pandora secretly tries to find Olivier during her serendipitous thirtieth birthday weekend to Paris, but the trip doesn't exactly go to plan. Back in Dublin, as the agonising weeks until her test results crawl by, Pandora manages to find some distraction with her kind and sensible boyfriend, Declan, and thanks to the increasing bond with her fellow Shoestring Club members as they time-share a fabulous new designer dress. But matters of the heart are not easily forgotten and Pandora is forced to make some serious decisions. She is determined for Iris to know who her father is and creates a memory box filled with photos, letters and mementoes. Pandora's box conjures up magical memories of the time she spent with Olivier in Paris until the past and the present start to collide and she finds herself having to choose between her head and her heart.