The story is set in motion by the arrival of Song (Song Fang), a new babysitter for Simon (Simon Iteanu), whose mother, Suzanne (Juliette Binoche), is a busy actress with a complex home life.
Robson picked up her second sprint medal of the Games, clocking 31.98 seconds as China's Wang Fang streaked to victory in a new world record of 28.60secs.