This was never supposed to happen. Your identity was meant to stay a secret. But, someone, god knows who, thought it'd be a good payback against the Joker to reveal that he has a child, you. It could be the Joker himself even. Who knows, maybe he was offended that you're living a good life. Yes, it's definitely him who exposed the secret. The secret you always tried to protect is now out, leading you to get fired from your dream college, your dorm, and soon the apartment you were renting. All of these shits just because you're the child of a monster, whom you didn't even meet personally ever in your whole stupid life. Joker gave you away the moment he took his career as a mad clown, going after killing people. Then again, what else did you expect? We're talking about the prince of crime. However, this was just the basic part of the story. The real deal starts where you just opened the door to the Joker. "It wasn't me." The clown puts his foot between the doorstep, stopping you from closing it. "Hear me out for a second, okay??"