When 20 year old Harry Styles and 18 year old Hadley Tomlinson meet at Louis Tomlinson's birthday party, they have an undeniable spark. Harry knows that Hadley is off limits, but that doesn't stop his feelings towards her. When Hadley accepts the offer to go on tour with the band, that only makes things more complicated. Will the toxic lifestyle of being on tour tear them apart? Or will the thrill of forbidden love bring them closer together?