Sam and Tusker holidays in motorhome in English countryside. There they visit the family, friends and places from the past. The couple have stayed together for twenty years, but since Tusker suffered early dementia, their lives has changed. He commutes between kind-ready sharpness and moments of total oblivion and is frightened by the idea of not being remembered for the one he has been but for the one he is about to become. The most important thing for them is the moments they have together, before Tusks disappear into a world where Sam can no longer reach him. Supernova is starring Colin Firth and Stanley Tucci.