A 23-year-old girl is contacted by an unknown life form claiming to be able to bring her older brother, who disappeared during a space mission, safely back to Earth.
Left by her husband, Elisabeth finds herself alone, responsible for the day-to-day care of her two children. She picks up a job on a night-time radio show, where she meets Talulah, a youngster she decides to take under her wing.
A young addict living on the streets of London is given a shot at redemption, but his road to recovery soon curdles into a strange odyssey from which he may never escape.