Emily has been looking for the same face in every crowd for more than a decade: her brother's. She never expects that one day he'll walk through the door of the housing office where she works, homeless and in need of help. Emily's overjoyed to see Stephen and invites him to live with her but the baggage of the day that tore them apart more than 15 years before is heavy. As they rebuild their relationship, they embark on the adventure they'd always promised to take when they're children running wild in the wetlands of Canvey Island. And so, they must finally confront what happened that day and in all the days since if they are to finally find their way home.