One day, young Dona Maria finds her father upset and crying. It turns out that the young Don Diego came to woo him and, becoming angry at the refusal, raised his hand against him. Maria's father considers himself humiliated and she decides to take revenge on the offender. Maria appears incognito in the prison cell where the hot-tempered Don Diego is trapped, and wounds him with a knife. Now she has to go on the run, hiding from justice under the guise of a servant.