Gabriel is a nuclear engineer. Cassie is an anti-nuclear campaigner. For nearly thirty years their lives have collided and entwined, with Cassie's cause dominating public opinion across the decades. But with political change rumbling underfoot, Cassie's life's work could yet be undone—and it's all led to this explosive night. Against the enflamed background of one of Australia's most divisive environmental issues, Alana Valentine 's tender, surprising new play interrogates the intersection of personal ambition and global responsibility. Nucleus welcomes some of Australia's theatre greats back to Griffin—one of our most celebrated and awarded playwrights Alana Valentine (Ladies Day ) and the great Paula Arundell ( The Bleeding Tree ). Joined by the brilliant Peter Kowitz ( The Floating World ) and directed by Griffin's very own Associate Artistic Director Andrea James ( swim , Jailbaby ), Nucleus tears through long-drawn battle lines to reveal what's at our core.