A woman named Jana arrives at the palace of La Promesa the day of heir Mr. Tomás' wedding. After saving the life of Tomás' younger brother, Jana is hired at the palace on her request. What nobody knows is that she has her own plans.
After Tomás is found dead, suspicions that he was murdered spread across La Promesa. Jana tries to get rid of anything that could incriminate her. Alonso calls the Civil Guards and an investigation of Tomás' death is initiated.