During the absence of her husband, who is fishing at sea, a woman is persecuted by the owner and unjustly convicted of a crime she has not committed.
Two girl detectives known as "Labios Rojos" ("Red Lips") outwit both criminals and a bumbling police inspector.
In 1913 a family of traveling musicians goes to the house of a rich marquise. Lolita, daughter of one of the musicians, encounters the son of the wealthy lady.