The research analyzes the concept of justice in the context of the plea bargain stipulated in Colombian legislation. As part of a broader investigation, this article firstly analyzes the concept of justice in a philosophical sense, and then analyzes the concept of plea bargain. Finally, the concept of plea bargain is intercepted in the more general concept of justice, based on Aristotle's paranomos and pleonektes concepts. It is concluded that the concept of plea bargain is classified as a fair institution as defined by this philosopher, so it is not given to the interpreter from this perspective to attribute unfair criteria to the decisions that put an end to the controversies through the plea bargain.