Sisters July and September are thick as thieves, though very different -September is protective and distrustful of others, while July is open to and curious about the world. Their dynamic is a concern to their single mum, Sheela, who is unsure what to do with them. When September is suspended from their school, July is left to fend for herself and begins to assert her own independence. Tension among the three women builds when they take refuge in an old holiday home in Ireland, where July finds her bond with September shifting in ways she cannot entirely understand or control.