The story begins with the graduation ceremony at the police academy, which trains honest, decent, strong-willed law enforcement officers. Sarp had no idea at all that his younger brother, who had been kidnapped many years ago, was his fellow student at the academy. Thus, before the kidnapping he was called Umut, and after it—Mert. In his childhood he was forcibly drawn into a street gang involved in illegal trafficking. But everyone needs a guardian angel... The girl Melek became such an angel to Umut-Mete. Thanks to her, he decided to put an end to the gang and choose the right path by enrolling in the police academy. Umut-Mete and Sarp fail to find common ground; conflicts and quarrels constantly flare up between them. They don't even realize that they are blood brothers. What destiny awaits them after they graduate from the academy?