Martirio, the mourner, falls in love with Sagrario, the bullfighter, when she sees her fighting the only bull of their little town. In order to get closer to her beloved, she will burn alive that bull to coincide the two of them at the funeral of the animal this way. There they will meet and will begin an intense relationship, where by night they will search the bull murderer all over the region. Finally it will be Martirio who will offer to accomplish the role of the bull on the motorcycle.