London journalist Iris is secretly in love with her colleague Jasper, but at an office party he announces that he is soon to marry someone else. Devastated, Iris retreats to her small cottage in the English countryside to escape her heartbreak. At the same time, in Los Angeles, successful advertising executive Amanda throws her unfaithful husband Ethan out of their luxury home just days before Christmas. Desperate to escape the gloom of the holidays, Amanda searches online for a getaway and stumbles upon Iris´s listing offering her cozy cottage for a two-week house swap. Within twenty-four hours, the two disappointed women have traded homes and are officially on Christmas vacation. Although both have sworn off men for good, life naturally has other plans. Iris´s brother Graham shows up unannounced and drunk at Amanda´s house, unaware that she even exists, and the two end up in bed together on their very first night, only for things to become complicated from there. Meanwhile, in Los Angeles, Iris strikes up friendships with two very different men: the elderly, eccentric screenwriter Arthur Abbot, who offers her wisdom and wit, and Hollywood composer Miles, who is himself reeling from being cheated on by his girlfriend. Amid new acquaintances, old wounds, and the holidays spent far from home, both women must figure out what they truly want from life and from love.