The Ballad of Wallis Island is a bittersweet comedy about music, memory, and the chaos of unhealed relationships. Charles (Tim Key), a quirky and reclusive lottery winner, lives alone on the remote Wallis Island. His dream? To host a private concert by his all-time favorite folk duo, McGwyer & Mortimer—now long estranged. He invites Herb McGwyer (Tom Basden), unaware that Herb’s former bandmate and ex-girlfriend, Nell Mortimer (Carey Mulligan), is also on the guest list—along with her new husband. As the former bandmates reunite under awkward and emotionally charged circumstances, tensions rise and unresolved feelings resurface. When a storm rolls in and traps everyone on the island, the fantasy of a perfect evening begins to unravel. With equal parts heart and humor, The Ballad of Wallis Island explores the fragility of nostalgia and the unexpected harmony that can come from facing the past.