A businessman is killed in a car crash,caused by a heart attack.A young girl,Elisabeth, has seen the accident.The dying man tells her that his fortune, he's just withdrawn from the bank, is intended for his illegitimate son, now a young doctor who does not know who his biological father is.He gives the package to the young girl ,recommending her not to tell him where the money comes.Elisabeth lives in a boarding-house where she meets her two best friends.They go in search of the young doctor ,but ,as the newspapers talk about the disappearance of the banknotes, they fear they may be suspected of theft..