Mother of two Julie (Laure Calamy) is making ends meet, getting by as the head chambermaid of a five-star hotel in Paris, with only sporadic alimony payments from her ex-husband. Each meticulously-planned day starts before sunrise, preparing the kids for school and undertaking a long commute to work, where she unflappably completes her duties in time to return to them. But when a national railway strike breaks out - paralysing the entire Île-de-France public transport system - Julie's routine is thrown into chaos, increasingly pushing her into a frenetic race against time that threatens everything she's worked so hard for.