The year is 2013, and Harry Styles have nothing to live for. He doesn't care about school, he sings on the local bar to pay a part of his bills, he do nothing but lay in bed when he's free and he have a friend that thinks he's a world wide known scientist. Just as Harry's tired of living, his friend Niall tells him that he just built a legit, working time machine. Of course Harry doesn't believe in such stories, but somehow he agrees to come with Niall as he tests it. An accident causes Harry to go back to 1918, right in WWI, where he has to stay until he figures how to get back. Along the way he meets Louis Tomlinson, a pianist that does nothing but read and drink tea all day. Will they continue living through the same routines as always, or will they help each other crawl out of the shell they built up for themselves?