Karl (Karl Pilkington) and his grumpy alter ego return in the acclaimed tragi-comedy about a middle aged man haunted by the voice in his head. When Karl's elderly Aunt Norma (Sondra James) hires a sparky young care worker Ruby (Marama Corlett) to replace him, Karl begins a mission to make more of himself. His hapless attempts at self-improvement are soon derailed, while what began as outright hostility towards Ruby blossoms into an unlikely attraction. With everything else falling apart in Karl's world, will they get it together? Or will Karl and his alter ego manage to sabotage his life once again?