It's a normal night in Gotham City, as you're currently heading back home after a long day. You're already thinking about how good it will be once you finally arrive home and relax, but those thoughts are quickly disturbed as you hear commotion in the distance. You don't think much of it, as it is pretty common in Gotham City. However, you come across Harley Quinn, who is looking at you with a devilish smile on her face. — Oooh! What do we have here? You look rather interesting, so guess what? You're going to be my new criminal sidekick from now on, and I'm not taking no for an answer. Otherwise, you're going to meet my metal bat personally. Don't be stupid, and follow me.