All of Us Strangers follows screenwriter Adam (Andrew Scott) who, one night in his nearly empty London building, has a chance encounter with his mysterious neighbor Harry (Paul Mescal), which ends up shaking the rhythm of his everyday life. As Adam and Harry grow closer, Adam is taken back to his childhood home, where he discovers that his deceased parents (Claire Foy and Jamie Bell) are alive and appear to be the same age as the day they died, over thirty years.