Cress (Denzel Washington) was once a special forces soldier who killed people without blinking an eye. However, after retiring, he was often awakened by nightmares of killing people. Unable to bear the pain, he had to resort to alcohol to numb his nerves. Seeing that this was not a long-term solution, his friends recommended him to Mexico to work as a private bodyguard. Mexico City is a city with a high crime rate in the world, and kidnapping incidents are frequent. Whether you have money or not, you may be kidnapped. Cress protects Pita (Dakota Fanning), the daughter of a millionaire. The 10-year-old Pinta is lively and cute. Her happy heart soon infected Cress, and she became the angel in Cress's life. However, the good times did not last long. Pita was kidnapped and killed! Cress was hit hard, and he was furious and decided to find the kidnappers alone to avenge Pita.