The new neighbour in the flat beside mine is Karen, a single mother. A small thing gets them talking. A lonely student up from the countryside with no friends, and a single mum with nobody to lean on — they pull toward each other. The distance closes, and eventually they end up in bed. But Karen's ex-husband is still around, and he's a threat to her, her child, and him. For their happiness and his own, he has to do something.