In Selly's opinion, she doesn't like it when her boyfriend acts like a man, especially when he hits her, especially when he humiliates her. But that's how Jack "the steel" is, as they call him in the department. And there's no chance Jack will change. Dwight, Selly's other friend, can't stand it and teaches him a lesson, to follow him later to the Old Town. Because Jack's walks bring trouble.
The Old Town is a border, a truce that holds well with the law and those who work there. And the balance holds for years until the mistake is made. Gael, Miko, Dwight will defend the old town, they will hold the border even at a high price.