Úrsula is an eleven-year-old girl with a rather complicated life. She has changed schools several times and her mother is on the run after stealing a painting from the Metropolitan Museum of Art.... No... That's not right. Úrsula is an eleven-year-old girl who goes by the name of Rebecca and hates magicians because one of them made her mother disappear. Or is Rebecca, the famous secret agent, the one who goes by the name of Úrsula as a disguise? Well, in any case, she's eleven years old, she has five earthworms which she keeps in a box and a cat who is lost in space. Or is the bit about the cat not true either? But is anyone really capable of telling the absolute truth absolutely all the time?