Rock legend Marianne Lane (Tilda Swinton) is recuperating on the volcanic island of Pantelleria with her partner Paul (Matthias Schoenaerts), when the iconoclastic record producer and old flame Harry (Ralph Fiennes) unexpectedly arrives with his daughter Penelope (Dakota Johnson) and interrupts their vacation, bringing with him an atomic-bomb-like explosion of delirious nostalgia from which there can be no escape. “A Bigger Splash” is a sensual portrait of laughter, desire, and rock and roll exploding into violence under the Mediterranean sun.