So this is the story of a boy named Jonas, who would become the Talon that replaced William Cobb, and he got super into it. Here's the thing, the issue is told in reverse, and because that's a total pain in the ass for me to put down into words, I'm going to do this spoiler post in reverse of what actually happens in the issue, but chronologically forward.
So, in 1918, Jonas was living on a farm with his mother in Georgia when the Spanish flu came, and his mom went a bit nuts, believing the chickens brought the sickness, and killed each and every single one with an axe, which sort of screwed Jonas up. So, Jonas ran, and eventually came across Haly's circus, where he was found sleeping among many of the circus' dangerous animals. So, the circus added him as an animal tamer, given he showed no fear, which is what the Court took notice of.
So he gets brought in by the Court, and takes his training really seriously... a little too seriously, as he begins to go crazy with his indoctrination, believing himself to be the chosen one, or something like that. Dude carves owl feathers into the face on his skin, so it's safe to say he's a team player for the Court. So after years of training, he is put into the maze beneath Gotham, and ultimately passes his final test by killing William Cobb, taking his place, and believing himself to become a true owl.